Numpy - String Functions & Operations

Numpy string operations | startswith() function

Last Updated : 29 Aug, 2020

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

Numpy - String Functions & Operations

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