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# Taken from Stack Overflow answer http://stackoverflow.com/a/2436623/4093021

import re

# items = ['[1]  rymoio [rymoio 7s] foo bar', '[2]  baz [rymoio 2d] hello world']

# assign matches to callable group parameters
regex = r"(?P<who>.*\[.*\]\s)(?P<what>.*)"

# bound method outside of the listcomp optimization
src = re.search

# assign matches to m within listcomp
items = [[m.group('who'), m.group('what')] for item in items for m in [src(regex, item)] if m]

# >>> [['[1]  rymoio [rymoio 7s] ', 'foo bar'], ['[2]  baz [rymoio 2d] ', 'hello world']]