numpy.core.defchararray.isnumeric (arr) returns true for each item if there are only numeric characters and at least one character. Returns false otherwise.

Parameters:
arr: array_like of str or unicode.

Returns: [ndarray] Output array of bools.

Code # 1:

# Python program explaining # numpy.char.isnumeric () method   import numpy as geek   # input array contains only numeric character in_arr = geek.array ([ `1000 ` , ` 2000` ]) print ( "Input array:" , in_arr)     out_arr = geek.char.isnumeric (in_arr) print ( "Output array:" , out_arr)

Output:

 Input array: [`1000`` 2000` ] Output array: [True True] 

Code # 2:

# Python program explaining # numpy.char.isnumeric () method   import numpy as geek   # input array in_arr = geek.array ([ `python3 .5` , `a1000` , `1234 ab` ]) print ( "Input array:" , in_arr)    out_arr = geek.char.isnumeric (in_arr) print ( "Output array:" , out_arr)

Output:

 Input array: [`python3.5`` a1000` `1234 ab`] Output array: [False False False]