DataFrame.
ndim
Return an int representing the number of array dimensions.
return 2 for DataFrame.
Examples
>>> df = ps.DataFrame([[1, 2], [4, 5], [7, 8]], ... index=['cobra', 'viper', None], ... columns=['max_speed', 'shield']) >>> df max_speed shield cobra 1 2 viper 4 5 NaN 7 8 >>> df.ndim 2