Question

How to remove all characters from a string except letters and numbers in Python

Answer 1

import re 
  
s = "pytnon4 @#%$ (PHP) !java 3.14"
  
s = re.sub('[\W_]+', '', s) 
  
print (s) 
  
  
  
'''
run:
  
pytnon4PHPjava314
  
'''

 

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Answer 2

s = "pytnon4 @#%$ (PHP) !java 3.14"
  
s = "".join(list([ch for ch in s if ch.isalpha() or ch.isnumeric()]))

print (s) 
  
  
  
'''
run:
  
pytnon4PHPjava314
  
'''

 

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Answer 3

s = "pytnon4 @#%$ (PHP) !java 3.14"
   
s = "".join(list([ch for ch in s if ch.isalnum()]))
 
print (s) 
   
   
   
'''
run:
   
pytnon4PHPjava314
   
'''

 

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