Question

How to check if a string contains only alphanumeric characters in Python

Answer 1

s = '12avG5'
print(s.isalnum()) 

s = '23@ac9'
print (s.isalnum()) 


'''
run:

True
False

'''

 

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Answer 2

import re

s = '12avG5'
print(re.match('^[\w]+$', s) is not None) 
 
s = '23@ac9'
print (re.match('^[\w]+$', s) is not None) 


'''
run:
 
True
False
 
'''

 

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