正则表达式分组功能实例

代码

import re

p = re.compile(r'(\d+)-(\d+)-(\d+)')
print(p.match('2018-05-10').group(2))
print(p.match('2018-05-10').groups())

year, month, day = p.match('2018-05-10').groups()
print(year)

运行