Antoine Pitrou created ARROW-14766:
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Summary: [Python] compute function arguments cannot be passed by
name, despite the exposed signature
Key: ARROW-14766
URL: https://issues.apache.org/jira/browse/ARROW-14766
Project: Apache Arrow
Issue Type: Bug
Components: Python
Reporter: Antoine Pitrou
Example:
{code:python}
>>> pc.is_in_meta_binary?
Signature: pc.is_in_meta_binary(values, value_set, *, memory_pool=None)
Docstring:
Find each element in a set of values.
For each element in `values`, return true if it is found in `value_set`,
false otherwise.
Parameters
----------
values : Array-like or scalar-like
Argument to compute function
value_set : Array-like or scalar-like
Argument to compute function
memory_pool : pyarrow.MemoryPool, optional
If not passed, will allocate memory from the default memory pool.
File: ~/arrow/dev/python/pyarrow/compute.py
Type: function
{code}
{code:python}
>>> pc.is_in_meta_binary(["a", "b", "c"], ["a", "b"])
<pyarrow.lib.BooleanArray object at 0x7f63c5dfad00>
[
true,
true,
false
]
>>> pc.is_in_meta_binary(["a", "b", "c"], value_set=["a", "b"])
Traceback (most recent call last):
File "<ipython-input-5-ea763d55e2a9>", line 1, in <module>
pc.is_in_meta_binary(["a", "b", "c"], value_set=["a", "b"])
TypeError: wrapper() got an unexpected keyword argument 'value_set'
{code}
Two possible solutions:
* mark the argument positional-only
* (better) change the generated wrapper to accept said named arguments
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