Numpy string operations | startswith() function

 numpy.core.defchararray.startswith() function returns a boolean array which is True where the string element in starts with prefix, otherwise False.

Syntax : numpy.core.defchararray.startswith(arr, prefix, start = 0, end = None)

Parameters :

arr : [array-like of str or unicode]  Array-like of str.

prefix : [str] Input string.

start, end : [int, optional] With optional start, test beginning at that position. With optional end, stop comparing at that position.

Return : [ndarray] Return the array of booleans.

Code #1 :

Python3

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

# importing numpy as geek
import numpy as geek

arr = "GeeksforGeeks - A computer science portal"
prefix = 'Geeks'

gfg = geek.char.startswith(arr, prefix, start = 0, end = None)

print (gfg)

Output :

True

Code #2 :

Python3

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

# importing numpy as geek
import numpy as geek

arr = "GeeksforGeeks - A computer science portal"
prefix = 'None'

gfg = geek.char.startswith(arr, prefix, start = 0, end = None)

print (gfg)

Output : 

False