How to find all the Occurance in the string

Question

I have a string '10101', need to find out the occurrence of '101' from the string. There are 2 occurrences of '101' first occurrence is from index 0 to 3 and the second occurrence is from index 3 to 5. How do I get this done using python?

Answer 1

Adapted from this answer:

import re
s = "10101"
matches = re.finditer(r'(?=(101))', s)
results = [m[1] for m in matches]
print(results)  # -> ['101', '101']

See the linked answer for details about how this works.

If you're using Python 3.5 or earlier, replace m[1] with m.group(1).