Question

I have text file with several thousands lines. I want to parse this file into database and decided to write a regexp. Here’s part of file:

blablabla checked=12 unchecked=1
blablabla unchecked=13
blablabla checked=14

As a result, I would like to get something like

(12,1)
(0,13)
(14,0)

Is it possible?

Answer 1

import re

s = """blablabla checked=12 unchecked=1
blablabla unchecked=13
blablabla checked=14"""

regex = re.compile(r"blablabla (?:(?:checked=)(\d+))? ?(?:(?:unchecked=)(\d+))?")

for line in s.splitlines():
    print regex.match(line).groups()

This gives you strings (or None if not found), but the idea should be clear.