numpy.core.defchararray.isalpha (arr) returns True for each item if all characters in the string are alphabetic 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.isalpha () method   import numpy as geek   # input array in_arr = geek.array ([ `abcd` , `ac1bd` , ` abdc` , `dcba` , ` ab cd ` ]) print ( "Input array:" , in_arr)    out_arr = geek.char.isalpha (in_arr) print ( "Output array: " , out_arr)

Output:

 Input array: [`abcd`` ac1bd` `abdc`` dcba` `ab cd`] Output array: [True False True True False] 

Code # 2:

# Python program explaining # numpy.char.isalpha () method   import numpy as geek   # input array in_arr = geek.array ([ `geeks` , ` for` , `geeks` , `wow!` ]) print ( "Input array:" , in_arr)    out_arr = geek.char.isalpha (in_arr) print ( "Output array:" , out_arr)

Exit:

 Input array: [`geeks`` for` `geeks`` wow! `] Output array: [True True True False]