python笔记37：正则的贪婪模式和非贪婪模式

import re
s = "this is a number 234-235-22-423"
r = re.match(r".+(\d+-\d+-\d+-\d+)",s)
result = r.group(1)
print(result)  #4-235-22-423

r = re.match(r"(.+)(\d+-\d+-\d+-\d+)",s)
result = r.groups()
print(result)  #('this is a number 23', '4-235-22-423')

# 去掉贪婪模式方法
r = re.match(r"(.+?)(\d+-\d+-\d+-\d+)",s)
result = r.groups()
print(result)  #('this is a number ', '234-235-22-423')

标签：22,python,number,模式,re,result,贪婪,235,423
来源： https://www.cnblogs.com/liulilitoday/p/13263557.html