operations with empty strings | islower () function

numpy.core.defchararray.islower(arr) returns True for each element, if all string characters in the string are lowercase and even though would be one uppercase character, otherwise it returns false.

Parameters:
arr: array_like of str or unicode

Returns: [ndarray] Output array of bools.

Code # 1:

Output :

 input array: [`P4Q R`` 4Q rP` `Q rp4`` rpq`] output array: [ False False False True] 

Code # 2:

# Python program explaining
# numpy.char.islower () function

 

import numpy as geek 

 

 

in_arr = geek.array ([ `P4Q R` , `4Q rP` , ` Q rp4` , `rpq` ])

print ( "input array:" , in_arr)

 

out_arr = geek.char.islower (in_arr)

print ( "output array:" , out_arr)

# Python program explaining
# numpy.char.lower () function

 

import numpy as geek 

 

 

in_arr = geek.array ([ `GEEKS` , `for` , ` Geeks` ])

 

print ( "input array:" , in_arr)

  

out_arr < code class = "keyword"> = geek.char.islower (in_arr)

print ( "output array:" , out_arr)

Exit:

 input array: [`GEEKS`` for` `Geeks`] output array: [False True False]