numpy string operations | isnumeric() function

numpy.core.defchararray.isnumeric(arr) function returns true for each element if there are only numeric characters and there is at least one character.It 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]