无法使用 smtplib 向我的 email 发送附件

Question

我正在尝试使用smtplib库将 csv 文件发送到我的 email 地址。 当我运行下面的脚本时，它发送 email 没有任何问题。 但是，当我打开那个 email 时，我可以看到那里没有附件。

我试过：

import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.base import MIMEBase
from email import encoders

attachment = "outputfile.csv"

msg = MIMEMultipart()
msg['Subject'] = "Email a csv file"
msg['Body'] = "find the attachment"
msg['From'] = "someemail@gmail.com"
msg['To'] = "anotheremail@gmail.com"

part = MIMEBase('application', "octet-stream")
part.set_payload(open(attachment, "rb").read())
encoders.encode_base64(part)

part.add_header('Content-Disposition', 'attachment', filename=attachment)

msg.attach(part)
msg = f"Subject: {msg['Subject']}\n\n{msg['Body']}"

with smtplib.SMTP('smtp.gmail.com',587) as server:
    server.ehlo()
    server.starttls()
    server.ehlo()

    server.login('someemail@gmail.com','ivfpklyudzdlefhr')
    server.sendmail(
        'someemail@gmail.com',
        'anotheremail@gmail.com',
        msg
    )

将 csv 文件发送到我的 email 应该带来哪些可能的变化？

Answer 1

代码需要两处改动

1. msg = f"Subject: {msg['Subject']}\n\n{msg['Body']}"正在用字符串覆盖消息 object msg 。 它不是必需的，可能会被删除。

2. 要发送消息 object（而不是字符串），请使用SMTP.send_message 。

这段代码应该可以工作：

import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.base import MIMEBase
from email import encoders

attachment = "outputfile.csv"

msg = MIMEMultipart()
msg['Subject'] = "Email a csv file"
msg['Body'] = "find the attachment"
msg['From'] = "someemail@gmail.com"
msg['To'] = "anotheremail@gmail.com"

part = MIMEBase('application', "octet-stream")
part.set_payload(open(attachment, "rb").read())
encoders.encode_base64(part)

part.add_header('Content-Disposition', 'attachment', filename=attachment)

msg.attach(part)

with smtplib.SMTP('smtp.gmail.com',587) as server:
    server.ehlo()
    server.starttls()
    server.ehlo()

    server.login('someemail@gmail.com','ivfpklyudzdlefhr')
    server.send_message(msg)