Python发送Email电子邮件代码

import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.mime.application import MIMEApplication
from email.header import Header
from email.utils import parseaddr, formataddr
import mimetypes
import os 
 
def send_email(smtp_server, username, password, sender, recipients, subject, content, cc, bcc, port=25, sendername=None, attachments=None):
    def _format_addr(s):
        name, addr = parseaddr(s)
        return formataddr((Header(name, 'utf-8').encode(), addr))
    if not attachments:
        attachments = []
    msg = MIMEMultipart()
    if sendername:
        msg['From'] = _format_addr(sendername + ' <%s>' % sender)
    else:
        msg['From'] = sender
    if isinstance(recipients, str):
        recipients = [recipients]
    msg['To'] = ",".join(recipients)
    if cc:
        if isinstance(cc, str):
            cc = [cc]
        cc_list = [addr for addr in cc if addr not in recipients]
        if cc_list:
            msg['Cc'] = ",".join(cc_list)
            recipients += cc_list
    if bcc:
        if isinstance(bcc, str):
            bcc = [bcc]
        bcc_list = [addr for addr in bcc if addr not in recipients]
        if bcc_list:
            msg['Bcc'] = ",".join(bcc_list)
            recipients += bcc_list
    msg['Subject'] = Header(subject, 'utf-8').encode()
    text_part = MIMEText(content, 'html', 'utf-8')
    msg.attach(text_part)
    for attachment in attachments:
        file_path = attachment["path"]
        if not os.path.isfile(file_path):
            print("附件文件不存在：{}".format(file_path))
            continue
        try:
            with open(file_path, "rb") as f:
                mime_type, encoding = mimetypes.guess_type(file_path)
                if mime_type is None:
                    mime_type = 'application/octet-stream'
                part = MIMEApplication(f.read())
                part.add_header('Content-Disposition', 'attachment', filename=attachment["filename"])
                part.add_header('Content-Type', mime_type)
                msg.attach(part)
        except FileNotFoundError as e:
            print("文件未找到：{}".format(e))
        except Exception as e:
            print("附件读取失败：{}".format(e))
    try:
        if str(port) == "25":
            server = smtplib.SMTP(smtp_server, port)
        else:
            server = smtplib.SMTP_SSL(smtp_server, port)
        server.login(username, password)
        server.sendmail(sender, recipients, msg.as_string())
        server.quit()
        print("邮件发送成功！")
    except Exception as e:
        print("邮件发送失败：{}".format(e))
 
 
 
smtp_server = "smtp.aliyun.com"
username = "abc@aliyun.com"
password = "password"
sender = "abc@aliyun.com"
recipients = "abc@abc.cn"
cc = ["abc@126.com","abc@139.com"]
bcc = ""
subject = "title"
content = "content"
n = "name"
port = 25
attachments = [{"filename":"申请单.xlsx","path":"C:/申请单.xlsx"},
               {"filename": "新课标.docx", "path": "D:/新课标.docx"},
                {"filename": "笨笨狗.pdf", "path": "D:/books/笨笨狗.pdf"}]
 
send_email(smtp_server, username, password, sender, recipients, subject, content, cc,bcc,port=port, sendername=n, attachments=attachments)