电子邮件地址并不像看上去那么简单!例如，Bob_O'Reilly+tag@example.com是一个有效的电子邮件地址。

我在lepl包(http://www.acooke.org/lepl/)上有一些运气。它可以验证RFC 3696中指出的电子邮件地址:http://www.faqs.org/rfcs/rfc3696.html

找到一些旧代码:

import lepl.apps.rfc3696
email_validator = lepl.apps.rfc3696.Email()
if not email_validator("email@example.com"):
    print "Invalid email"

The only really accurate way of distinguishing real, valid email addresses from invalid ones is to send mail to it. What counts as an email is surprisingly convoluted ("John Doe" <john.doe@example.com>" actually is a valid email address), and you most likely want the email address to actually send mail to it later. After it passes some basic sanity checks (such as in Thomas's answer, has an @ and at least one . after the @), you should probably just send an email verification letter to the address, and wait for the user to follow a link embedded in the message to confirm that the email was valid.

在电子邮件输入上使用此过滤器掩码: emailMask: / (\ w .\-@'"!#$%&'*+/=?^ _{|} ~) /我

import re
def email():
    email = raw_input("enter the mail address::")
     match = re.search(r'[\w.-]+@[\w.-]+.\w+', email)

    if match:
        print "valid email :::", match.group()
    else:
        print "not valid:::"

email()

如果你想从一个长字符串或文件中取出邮件，那么试试这个。

([^@|\s]+@[^@]+\.[^@|\s]+)

注意，当你的电子邮件地址前后都有空格时，这是有效的。如果你没有空间或有一些特殊的字符，那么你可以尝试修改它。

工作的例子:

string="Hello ABCD, here is my mail id example@me.com "
res = re.search("([^@|\s]+@[^@]+\.[^@|\s]+)",string,re.I)
res.group(1)

这将从该字符串中删除example@me.com。

另外，注意这可能不是正确答案……但我把它贴在这里是为了帮助像我这样有特殊要求的人

电子邮件验证

import re
def validate(email): 
    match=re.search(r"(^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9]+\.[a-zA-Z0-9.]*\.*[com|org|edu]{3}$)",email)
    if match:
        return 'Valid email.'
    else:
        return 'Invalid email.'