How to determine whether a column/variable is numeric or not in Pandas/NumPy?

Question

Is there a better way to determine whether a variable in Pandas and/or NumPy is numeric or not ?

I have a self defined

Answer 1

Based on @jaime's answer in the comments, you need to check .dtype.kind for the column of interest. For example;

>>> import pandas as pd
>>> df = pd.DataFrame({'numeric': [1, 2, 3], 'not_numeric': ['A', 'B', 'C']})
>>> df['numeric'].dtype.kind in 'biufc'
>>> True
>>> df['not_numeric'].dtype.kind in 'biufc'
>>> False

NB The meaning of biufc: b bool, i int (signed), u unsigned int, f float, c complex. See https://docs.scipy.org/doc/numpy/reference/generated/numpy.dtype.kind.html#numpy.dtype.kind