Question

How to remove all non-alphanumeric characters from a string in Python

Answer 1

import re
 
s = 'Python, #Java@ !C ^&CPP 100 (*)PHP.'
 
pattern = r'[^A-Za-z0-9]+'
 
s = re.sub(pattern, '', s)
 
print(s)
 
 
 
 
'''
run:
 
PythonJavaCCPP100PHP

'''

 

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Answer 2

s = 'Python, #Java@ !C ^&CPP 100 (*)PHP.'
 
s = ''.join(ch for ch in s if ch.isalnum())
 
print(s)
 
 
 
 
'''
run:
 
PythonJavaCCPP100PHP

'''

 

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Answer 3

s = 'Python, #Java@ !C ^&CPP 100 (*)PHP.'
 
s = ''.join(filter(str.isalnum, s))
 
print(s)
 
 
 
 
'''
run:
 
PythonJavaCCPP100PHP

'''

 

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