[Python] Int64Scalar and related instances should subclass the appropriate numbers abstract base class (abc)

[tswast]

Describe the enhancement requested

The built-in numbers module provides abstract base classes for checking for various kinds of numbers. It would be helpful if pyarrow integer scalar values derived from these classes for more robust checks in code that might accept pyarrow values.

In [1]: import numpy as np

In [2]: import numbers

In [3]: isinstance(123, numbers.Integral)
Out[3]: True

In [6]: v = np.int64(123)

In [7]: isinstance(v, numbers.Integral)
Out[7]: True

In [8]: isinstance(v, int)
Out[8]: False

In [9]: import pyarrow as pa

In [10]: vv = pa.scalar(123)

In [11]: vv
Out[11]: <pyarrow.Int64Scalar: 123>

In [13]: isinstance(vv, numbers.Integral)
Out[13]: False

Component(s)

Python