正規表現05-先頭と末尾の一致

先頭と末尾の一致
文字
機能
^
一致文字列の先頭
$
一致文字列の末尾
例1:$
需要:一致163.comのメールアドレス

#coding=utf-8

import re

email_list = ["[email protected]", "[email protected]", "[email protected]"]

for email in email_list:
    ret = re.match("[\w]{4,20}@163\.com", email)
    if ret:
        print("%s           ,       :%s" % (email, ret.group()))
    else:
        print("%s      " % email)

実行結果:

[email protected]           ,       :[email protected]
[email protected]           ,       :[email protected]
[email protected]      

完備後

email_list = ["[email protected]", "[email protected]", "[email protected]"]

for email in email_list:
    ret = re.match("[\w]{4,20}@163\.com$", email)
    if ret:
        print("%s           ,       :%s" % (email, ret.group()))
    else:
        print("%s      " % email)

実行結果:

[email protected]           ,       :[email protected]
[email protected]      
[email protected]