Python使用正则表达式匹配时间的详解

>>> import re

>>> t = '19:10:48'

>>> m = re.match(r'(.*):(.*):(.*)', t)

>>> m.groups()

('19', '10', '48')

>>> t = '19:10:48'

>>> m = re.match(r'(\d{2}):(\d{2}):(\d{2})', t)

>>> m.groups()

('19', '10', '48')

>>> t = '23:59:08'

>>> p = re.compile(r'^(0?[0-9]|1[0-9]|2[0-3]):(0?[0-9]|[1-5][0-9]):(0?[0-9]|[1-5][0-9])$')

>>> s = p.search(t)

>>> s.groups()

('23', '59', '08')