Question

How to get all the indexes of all the occurrences of substring in string with Python

Answer 1

s = 'python php python java python c++ python c'
   
substr = "python"
     
indexes = [i for i in range(0, len(s)) if s[i:].startswith(substr)] 
  
print(indexes)
  
           
    
    
'''
run:
     
[0, 11, 23, 34]
 
'''

 

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Answer 2

import re;
  
s = 'python php python java python c++ python c'
  
substr = "python"
  
matches = re.finditer(substr, s)
  
indexes = [match.start() for match in matches]
  
print(indexes)

  
  
  
'''
run:
  
[0, 11, 23, 34]

'''

 

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