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update readme and changelog #38
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Original file line number | Diff line number | Diff line change |
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@@ -39,11 +39,9 @@ Simple usage: | |
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```python | ||
import datafusion | ||
from datafusion import functions as f | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. When I tried running this example now I get the following error: >>> # create a new statement
>>> df = df.select(
... f.col("a") + f.col("b"),
... f.col("a") - f.col("b"),
... )
Traceback (most recent call last):
File "<stdin>", line 2, in <module>
File "/Users/alamb/Software/virtual_envs/arrow_dev/lib/python3.9/site-packages/datafusion/functions.py", line 23, in __getattr__
return getattr(functions, name)
AttributeError: module 'functions' has no attribute 'col'
>>> |
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import pyarrow | ||
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# an alias | ||
f = datafusion.functions | ||
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# create a context | ||
ctx = datafusion.ExecutionContext() | ||
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@@ -125,6 +123,14 @@ pip install datafusion | |
python -m pip install datafusion | ||
``` | ||
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You can verify the installation by running: | ||
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```text | ||
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>>> import datafusion | ||
>>> datafusion.__version__ | ||
'0.5.0' | ||
``` | ||
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## How to develop | ||
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This assumes that you have rust and cargo installed. We use the workflow recommended by [pyo3](https://github.com/PyO3/pyo3) and [maturin](https://github.com/PyO3/maturin). | ||
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something looks strange to me about these older version (in that it contains entries for the rcs)