more collections, actually set

pandas/compat/chainmap_impl.py

@@ -1,4 +1,11 @@
-from collections import MutableMapping
+import sys
+
+PY3 = sys.version_info[0] >= 3
+
+if PY3:
+    from collections.abc import MutableMapping
+else:
+    from collections import MutableMapping
 
 try:
     from thread import get_ident

pandas/tests/arithmetic/test_numeric.py

@@ -4,15 +4,14 @@
 # Specifically for numeric dtypes
 from decimal import Decimal
 import operator
-from collections import Iterable
 
 import pytest
 import numpy as np
 
 import pandas as pd
 import pandas.util.testing as tm
 
-from pandas.compat import PY3
+from pandas.compat import PY3, Iterable
 from pandas.core import ops
 from pandas import Timedelta, Series, Index, TimedeltaIndex
 

pandas/tests/dtypes/test_inference.py

@@ -20,6 +20,7 @@
                     DatetimeIndex, TimedeltaIndex, Timestamp,
                     Panel, Period, Categorical, isna, Interval,
                     DateOffset)
+from pandas import compat
 from pandas.compat import u, PY2, StringIO, lrange
 from pandas.core.dtypes import inference
 from pandas.core.dtypes.common import (

pandas/tests/reshape/test_concat.py

@@ -1,5 +1,6 @@
 from warnings import catch_warnings, simplefilter
 from itertools import combinations
+from collections import deque
 
 import datetime as dt
 import dateutil
@@ -13,6 +14,7 @@
                     read_csv, isna, Series, date_range,
                     Index, Panel, MultiIndex, Timestamp,
                     DatetimeIndex, Categorical)
+from pandas.compat import Iterable
 from pandas.core.dtypes.dtypes import CategoricalDtype
 from pandas.util import testing as tm
 from pandas.util.testing import (assert_frame_equal,
@@ -1725,8 +1727,6 @@ def test_concat_series_axis1_same_names_ignore_index(self):
         tm.assert_index_equal(result.columns, expected)
 
     def test_concat_iterables(self):
-        from collections import deque, Iterable
-
         # GH8645 check concat works with tuples, list, generators, and weird
         # stuff like deque and custom iterables
         df1 = DataFrame([1, 2, 3])