[ARROW-9376] [Python] RecordBatch.from_arrays: PyCharm inspection problems with the types of parameters passed

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Not A Problem
• Affects Version/s: 0.17.1
• Component/s: Python
• External issue URL: https://github.com/apache/arrow/issues/25459
• Assignee: Unassigned
• Reporter: Athanassios Hatzis
• Created: 08/Jul/20 17:59
• Updated: 11/Jan/23 08:06
• Resolved: 08/Jul/20 20:52

Description

First try

 data = [pa.array([1, 2, 3, 4]), pa.array(['foo', 'bar', 'baz', None]), pa.array([True, None, False, True])]
 batch = pa.RecordBatch.from_arrays(data, ['f0', 'f1', 'f2'])

Hi, I use PyCharm IDE for development and I am getting the following inspection description when I write this piece of code above in the editor.

Expected type 'RecordBatch', got 'List[Union[Union[ChunkedArray, Array], Any]]' instead

Inspection info: This inspection detects type errors in function call expressions. Due to dynamic dispatch and duck typing, this is possible in a limited but useful number of cases. Types of function parameters can be specified in docstrings or in Python 3 function annotations.

Second try

batch = pa.RecordBatch.from_arrays(data, names=['f0', 'f1', 'f2'])

Then you get an insection descriptions

Parameter 'list_arrays' unfilled

Passing list instead of pyarrow.lib.RecordBatch.RecordBatch. Is this intentional?

Third try

batch = pa.RecordBatch.from_arrays(list_arrays=data, names=['f0', 'f1', 'f2'])

Then you get an insection description and a type error

Parameter 'self' unfilled
TypeError: from_arrays() takes at least 1 positional argument (0 given) 

 

Similar response, behaviour happens with the pa.Table.from_arrays