numpy.core.defchararray.isdigit (arr) returns True for each item if all characters in the string are numbers and there is at least one character; otherwise returns false

Parameters:
arr: array_like of str or unicode.

Returns: [ndarray] Output array of bools.

Code # 1:

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

Output :

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

Code # 2:

# Python program explaining # numpy.char.isdigit () method   import numpy as geek    # input array contains numbers along with spaces and alphabets in_arr = geek.array ([ ` 1000 2` , `a1000` , ` 1234 ab` ]) print ( " Input array: " , in_arr)    out_arr = geek.char.isdigit (in_arr) print ( " Output array: " , out_arr)

Output :

 Input array: [`1 000 2` `a1000`` 1234 ab`] Output array: [False False False]