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  1. import re
  2.  
  3.  
  4. r = re.compile(r'(hello|world)')
  5.  
  6.  
  7. string = 'hello world the World!!'
  8.  
  9. print(re.sub(r, r'fuck.\1', string))
  10.  
  11.  
Success #stdin #stdout 0.02s 8736KB
comments (?)
stdin 
Standard input is empty
stdout 
fuck.hello fuck.world the World!!
https://ideone.com/Wj2N6X
language:
Python 3 (python  3.9.5)
created:
9 years ago
visibility:
public

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