python基础 --使用正则来处理各种匹配问题

import re
##匹配列表内的非负整数
list = [99,100,-100,-1,90]
pattern = re.compile(r'[1-9]\d*|0')
for i in list:
        m = pattern.search(str(i))
        print(m)

##匹配列表内的整数
list = [99,100,-100,-1,90]
pattern = re.compile(r'[1-9]\d*')
for i in list:
        m = pattern.match(str(i))
        print(m)


##匹配列表内的非正整数
list = [99,100,-100,-1,90]
pattern = re.compile(r'-[1-9]\d*|0')
for i in list:
        m = pattern.match(str(i))
        print(m)



# ##正则匹配邮箱
c = re.compile(r'^\w+@(\w+\.)+(com|cn|net|edu)$')
string = '50772618@qq.com'
s = c.search(string)
if s:
    print(s.group())


##匹配十一位手机号
c = re.compile(r'^1[3-9]\d{9}$')
s = c.search('18785397892')
if s:
    print(s.group())

c = re.compile(r'^[1-9]\d*|0$')
s = c.search('')
if s:
    print(s.group())

##正则匹配日期
pattern = re.compile(r'[1-9]\d{3}-(1[0-2]|0?[1-9])-(3[0-1]|[1-2]\d|0?[1-9])')#定义匹配模式

string = 'hgfdjyjhfdjjj,2019-12-19jhgfjhgfjhf'
s = re.search(string)
print(s.group())
print(pattern.search(string,s.end()+1))


##匹配密码
pattern = re.compile(r'[A-Z]\w{7,9}')
m = pattern.search('basldaE3217894_324yiudasjl')
if m :
        print(m.group())

来源：CSDN

作者：D_dalei

链接：https://blog.csdn.net/D_wart/article/details/103626552