python + SMTP 发送邮件

# SMTP发送邮件
import smtplib
from email.mime.image import MIMEImage
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from Config import ConstantConfig as con


# class SendEmail():
#
#     def __init__(self):
#         # 第三方 SMTP 服务
#         self.mail_host = con.MAIL_HOST  # 设置服务器
#         self.mail_user = con.MAIL_USER  # 用户名
#         self.mail_pass = con.MAIL_PW  # 发送方邮箱的授权码
#         self.sender = con.SENDER　　　　# 邮件发送方
#         self.receivers = con.RECEIVERS  # 邮件接收方，可设置为你的QQ邮箱或者其他邮箱
#
#     """发送附件"""
#     def send_enclosure(self,file_name):
#
#         # 创建一个带附件的实例
#         message = MIMEMultipart()
#         message['From'] = Header(self.sender, 'utf-8')
#         message['To'] = Header(str(self.receivers), 'utf-8')
#         subject = con.SUBJECT　　# 邮件主题
#         message['Subject'] = Header(subject, 'utf-8')
#
#         #邮件正文内容
#         message.attach(MIMEText(con.TEXT, 'plain','utf-8'))    # 'plain'表示纯文本
#
#         # 构造附件1，传送当前目录下的 test.txt 文件
#         att1 = MIMEText(open(file_name,encoding='utf-8').read())
#         att1["Content-Type"] = 'application/octet-stream'
#         # 这里的filename可以任意写，写什么名字，邮件中显示什么名字
#         att1["Content-Disposition"] = 'attachment; filename=%s'%file_name
#         message.attach(att1)
#
#         try:
#             smtpObj = smtplib.SMTP()
#             smtpObj.connect(self.mail_host, 25)  # 25 为 SMTP 默认端口号
#             smtpObj.login(self.mail_user, self.mail_pass)   # 登录邮箱
#             smtpObj.sendmail(self.sender, self.receivers, message.as_string())  # 发送邮件，as_string()把MIMEText对象变成str
#             print("邮件发送成功")
#         except smtplib.SMTPException as e:
#             print("Error: {}".format(e))

# SendEmail().send_enclosure(r"D:P5-Metabase BIReports
esult_2020-08-17-17_45_31.html")

def sendEmail(file_name):
    global s
    msg = MIMEMultipart('mixed')
    msg['Subject'] = con.SUBJECT
    msg['From'] = con.SENDER
    msg['To'] = ';'.join(con.RECEIVERS) #有多个收件人时,通过join将列表转换为以;为间隔的字符串

    # 构造文字内容
    text_plain = MIMEText(con.TEXT, 'plain', 'utf-8' )
    msg.attach(text_plain )

    # 构造图片链接
    with open(con.IMAGR_PATH, 'rb' ) as f:
        sendimagefile = f.read()
        image = MIMEImage(sendimagefile )
        image.add_header('Content-ID', '<image1>' )
        image["Content-Disposition"] = 'attachment; filename="testimage.png"'
        msg.attach(image )

    # 构造html
    # 发送正文中的图片:由于包含未被许可的信息，网易邮箱定义为垃圾邮件，报554 DT:SPM ：<p><img src="cid:image1"></p>
    with open(file_name,'rb') as f:
        html = f.read()
        text_html = MIMEText(html, 'html', 'utf-8' )
        text_html["Content-Disposition"] = 'attachment; filename=%s'%file_name
        msg.attach(text_html )

    # 构造附件
    with open(file_name, 'rb') as f:
        sendfile = f.read()    # rc.get_email("report_path") 为测试报告的地址
        text_att = MIMEText(sendfile, 'base64', 'utf-8' )
        text_att["Content-Type"] = 'application/octet-stream'
        # 以下附件可以重命名成aaa.txt
        # text_att["Content-Disposition"] = 'attachment; filename="aaa.txt"'
        # 另一种实现方式
        text_att.add_header('Content-Disposition', 'attachment', filename='aaa.txt' )
        # 以下中文测试不ok
        # text_att["Content-Disposition"] = u'attachment; filename="中文附件.txt"'.decode('utf-8')
        msg.attach(text_att )

    #发送邮件
    try:
        s = smtplib.SMTP_SSL(con.MAIL_HOST, con.MAIL_PORT)# 邮件服务器及端口号
        s.login(con.MAIL_USER, con.MAIL_PW )
        s.sendmail(con.SENDER, con.RECEIVERS, msg.as_string() )
        print("邮件发送成功")
    except smtplib.SMTPException as e:
        print("Error: {}".format(e))
    finally:
        s.quit()