python smtplib 发送邮件设置抄送人

好的，以下是 python smtplib 发送邮件设置抄送人的代码示例：

import smtplib
from email.mime.text import MIMEText
from email.header import Header

# 设置邮件发送方，接收方，抄送方及内容
sender = 'from@example.com'
receivers = ['to@example.com']
cc = ['cc@example.com']
mail_content = 'Hello, this is a test email.'
message = MIMEText(mail_content, 'plain', 'utf-8')
message['From'] = Header(sender, 'utf-8')
message['To'] = Header(receivers[0], 'utf-8')
message['Cc'] = ','.join(cc)
message['Subject'] = Header('Test Email', 'utf-8')

# 设置邮件服务器及账户信息
smtp_server = 'smtp.example.com'
smtp_port = 25
smtp_username = 'username'
smtp_password = 'password'

# 发送邮件
try:
    smtp_obj = smtplib.SMTP(smtp_server, smtp_port)
    smtp_obj.login(smtp_username, smtp_password)
    smtp_obj.sendmail(sender, receivers + cc, message.as_string())
    print('邮件发送成功')
except smtplib.SMTPException as e:
    print('邮件发送失败:', e)

以上代码中，抄送人信息存储在 cc 列表中，可以通过 `message['Cc'] = ','.join(cc)` 设置抄送人信息。smtp_server、smtp_port、smtp_username 和 smtp_password 分别代表邮件服务器、邮件服务器端口、邮件账户名和邮件账户密码，需要根据实际情况进行修改。