怎么用python收发邮件

要使用Python收发邮件，你可以使用内置的smtplib和poplib模块来发送和接收邮件。下面是一个简单的示例：

发送邮件：

import smtplib
from email.mime.text import MIMEText

def send_email(sender_email, receiver_email, subject, message, password):
    # 创建邮件内容
    email_message = MIMEText(message)
    email_message['Subject'] = subject
    email_message['From'] = sender_email
    email_message['To'] = receiver_email

    # 发送邮件
    with smtplib.SMTP('smtp.gmail.com', 587) as smtp:
        smtp.starttls()
        smtp.login(sender_email, password)
        smtp.send_message(email_message)

接收邮件：

import poplib
from email.parser import Parser

def receive_email(receiver_email, password):
    # 连接到POP3服务器
    with poplib.POP3('pop.gmail.com') as pop:
        pop.user(receiver_email)
        pop.pass_(password)

        # 获取邮件列表
        email_list = pop.list()[1]
        for email_info in email_list:
            email_number, _ = email_info.decode().split(' ')
            email_number = int(email_number)

            # 获取邮件内容
            _, lines, _ = pop.retr(email_number)
            email_content = b'\r\n'.join(lines).decode('utf-8')

            # 解析邮件内容
            email = Parser().parsestr(email_content)

            # 打印邮件主题和发件人
            print("主题：", email['Subject'])
            print("发件人：", email['From'])

注意：在发送邮件之前，你需要在发件人的邮箱设置中启用SMTP访问，并生成一个应用密码（如果使用Gmail）。

在接收邮件之前，你需要在收件人的邮箱设置中启用POP3访问。

你可以根据需要对以上代码进行修改和扩展。