Number of regex matches

Question

I\'m using the finditer function in the re module to match some things and everything is working.

Now I need to find out how many matches

Answer 1

I know this is a little old, but this but here is a concise function for counting regex patterns.

def regex_cnt(string, pattern):
    return len(re.findall(pattern, string))

string = 'abc123'

regex_cnt(string, '[0-9]')