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RecursionError when comparing columns with a string beginning in "interval" on Debian #25406

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RecursionError when comparing columns with a string beginning in "interval" on Debian#25406
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Duplicate ReportDuplicate issue or pull requestIntervalInterval data type
@cdebost

Description

@cdebost
cdebost
opened on Feb 22, 2019

Code Sample

import pandas as pd
d = {'col1': ['a', 'b']}
df = pd.DataFrame(data=d)
df.col1 == 'interval'  # works
df.col1 == 'bintervals'  # works
df.col1 == 'intervals'  # RecursionError
df.col1 == 'interval11111'  # RecursionError

Reproduced on python 2.7.15, 3.6.7, 3.7.0, 3.7.2 on Debian (using official Docker images), can't reproduce on macOS.

Issue Description

My use case involves using a very small DataFrame from a csv, whose columns will be compared against words in news stories. Recently, I noticed some RecusionErrors in my server logs. After some digging, I discovered that comparing a DataFrame's column against a string that starts with "interval" causes the RecursionError.

The error appears to occur when the string starts with "interval" (no characters preceding it) and has additional characters after "interval". I'm not familiar enough with pandas to know why this could be happening. Are values starting with "interval" reserved for pandas' internal implementation of Intervals?

Strangely I can't reproduce the RecursionError on macOS. This issue could be related to Python on Debian, but the recursion loop does seem to originate in pandas/core/dtypes/dtypes.py.

My apologies if this is a duplicate issue that is already being tracked. I could not find any other reports of issues with this value, or documentation that states "interval..." is a reserved value.

Stack trace of RecursionError

Traceback (most recent call last): File "", line 1, in File "/usr/local/lib/python2.7/site-packages/pandas/core/ops.py", line 1728, in wrapper (is_extension_array_dtype(other) and not is_scalar(other))): File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 1749, in is_extension_array_dtype registry.find(dtype) is not None) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 938, in construct_from_string return cls(string) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 899, in __new__ subtype = pandas_dtype(subtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/common.py", line 2004, in pandas_dtype result = registry.find(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 89, in find return dtype_type.construct_from_string(dtype) File "/usr/local/lib/python2.7/site-packages/pandas/core/dtypes/dtypes.py", line 689, in construct_from_string if isinstance(string, compat.string_types): RuntimeError: maximum recursion depth exceeded while calling a Python object

Expected Output

Pandas should not raise a RecursionError.

Output of pd.show_versions()

INSTALLED VERSIONS ------------------ commit: None python: 3.6.7.final.0 python-bits: 64 OS: Linux OS-release: 4.9.125-linuxkit machine: x86_64 processor: byteorder: little LC_ALL: None LANG: C.UTF-8 LOCALE: en_US.UTF-8

pandas: 0.24.1
pytest: 4.3.0
pip: 18.1
setuptools: 40.6.2
Cython: None
numpy: 1.16.1
scipy: None
pyarrow: None
xarray: None
IPython: None
sphinx: None
patsy: None
dateutil: 2.8.0
pytz: 2018.9
blosc: None
bottleneck: None
tables: None
numexpr: None
feather: None
matplotlib: None
openpyxl: None
xlrd: None
xlwt: None
xlsxwriter: None
lxml.etree: None
bs4: None
html5lib: None
sqlalchemy: 1.2.18
pymysql: None
psycopg2: 2.7.7 (dt dec pq3 ext lo64)
jinja2: 2.10
s3fs: None
fastparquet: None
pandas_gbq: None
pandas_datareader: None
gcsfs: None

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