Python: Find the occurrence and position of the substrings within a string

Last update on March 31 2025 12:57:26 (UTC/GMT +8 hours)

22. Substring Occurrence and Position

Write a Python program to find the occurrence and position of substrings within a string.

Sample Solution:

Python Code:

import re
text = 'Python exercises, PHP exercises, C# exercises'
pattern = 'exercises'
for match in re.finditer(pattern, text):
    s = match.start()
    e = match.end()
    print('Found "%s" at %d:%d' % (text[s:e], s, e))
	

Sample Output:

Found "exercises" at 7:16                                                                                     
Found "exercises" at 22:31                                                                                    
Found "exercises" at 36:45

Pictorial Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to find each occurrence of a substring in a string and output its starting index.
• Write a Python script to search for a pattern in a string and then list all positions where it occurs.
• Write a Python program to iterate over a string, record the positions of a given substring, and then print a summary.
• Write a Python program to count and print the starting positions of every occurrence of a specified substring in a text.

Python Code Editor:

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