How to use regexp on file, line by line, in Python

Question

Here is my regexp: f\\(\\s*([^,]+)\\s*,\\s*([^,]+)\\s*\\)

I\'d have to apply this on a file, line by line. The line by line is OK, simple reading from

Answer 1

import re
with open('file.txt') as f:
    for line in f:
        match = re.search('f\(\s*([^,]+)\s*,\s*([^,]+)\s*\)', line)

Note that Python automatically compiles and caches the regex, so a separate compile step is not required in this case.