pytest框架发送邮件代码

我可以提供一份基于pytest框架的发送邮件的代码示例：

# 导入需要使用的库
import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.mime.application import MIMEApplication
import pytest

# pytest测试函数
def test_send_mail():
    # 邮件用户名和密码
    mail_user = 'your_email_username'
    mail_password = 'your_email_password'
    # 邮件接收人列表
    mail_receiver = ['receiver1@example.com', 'receiver2@example.com']
    # 邮件主题
    mail_subject = 'Test Mail'
    # 邮件正文
    mail_body = 'This is a test mail.'
    # 构造邮件对象
    message = MIMEMultipart()
    # 添加邮件正文
    message.attach(MIMEText(mail_body, 'plain', 'utf-8'))
    # 添加附件
    file_path = 'test_report.html'
    with open(file_path, 'rb') as f:
        att = MIMEApplication(f.read())
        att.add_header('Content-Disposition', 'attachment', filename=file_path)
        message.attach(att)
    # 设置邮件头信息
    message['From'] = mail_user
    message['To'] = ';'.join(mail_receiver)
    message['Subject'] = mail_subject
    # 发送邮件
    try:
        smtp_server = 'smtp.example.com'
        smtp_port = 465
        server = smtplib.SMTP_SSL(smtp_server, smtp_port)
        server.login(mail_user, mail_password)
        server.sendmail(mail_user, mail_receiver, message.as_string())
        server.quit()
        print('Mail sent successfully!')
    except Exception as e:
        print('Error ocurred: ', str(e))
        raise e

该函数会构造一个带附件的邮件对象，然后通过SMTP协议将邮件发送出去，其中需要填写发送邮箱的用户名、密码，SMTP服务器地址和端口等信息。同时，邮件正文和附件也需要自行设置。此处的事例中使用了pytest测试框架并将该代码放在了pytest测试函数中进行测试。