Python smtplib 无法附加多个 mimetext

Question

我无法弄清楚为什么我的 python 代码无法在同一封电子邮件中附加 HTML table（第 2 部分）和普通句子（第 1 部分）。我试着评论一行 message.attach(part2) ，反之亦然。 message object.

有问题

    port = 587 # For starttls
    smtp_server = "smtp.gmail.com"
    sender_email = "xyz@gmail.com"
    receiver_email = ["abc@qwer.com","def@gmail.com"]
    password = getpass.getpass()
    message = MIMEMultipart("alternative")
    message["From"] = sender_email
    message["To"] = ", ".join(receiver_email)
    message["Subject"] = "Report"

    # Create the plain-text and HTML version of your message
    pd.read_csv('tmp.csv').to_html('report_html.html')
    html=open('report_html.html').read()

    part1=MIMEText("Following are the instances currently running:\n","plain")
    part2=MIMEText(html,"html")
    message.attach(part1)
    message.attach(part2)

    context = ssl.create_default_context()
    with smtplib.SMTP(smtp_server, port) as server:
        server.ehlo() # Can be omitted
        server.starttls(context=context)
        server.ehlo() # Can be omitted
        server.login(sender_email,password)
        server.sendmail(sender_email, receiver_email, 
        message.as_string())

我对第 1 部分和第 2 部分输出的单独尝试如下：

Answer 1

您使用的 multipart 容器类型错误。 multipart/alternative 容器告诉接收客户端 "here are multiple variants of the same content; display whichever one suits the user's preferences and your technical capabilities." 但您想说 "here are several parts; display all of them, one way or another." 合适的内容类型是 multipart/mixed 或可能 multipart/related。

Python smtplib 无法附加多个 mimetext

Python smtplib cannot attach multiple mimetext

python

smtplib

python-3.x