# -*- coding: UTF-8 -*-
import re
s = 'isinstance yangge enumerate www.xdc.ink 1999'

r = re.findall("a(?P<name>\w+)", s)  # 分组
print(r)
 
#  li = re.split('any', s)
#  print(li)

print(re.findall('a.*b', 'a1b2222222b'))   # 贪婪匹配
print(re.findall('a.*?b', 'a1b2222222b'))  # 非贪婪匹配，最小匹配