無法使用 smtplib 向我的 email 發送附件

Question

我正在嘗試使用smtplib庫將 csv 文件發送到我的 email 地址。 當我運行下面的腳本時，它發送 email 沒有任何問題。 但是，當我打開那個 email 時，我可以看到那里沒有附件。

我試過：

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
    )

將 csv 文件發送到我的 email 應該帶來哪些可能的變化？

Answer 1

代碼需要兩處改動

1. msg = f"Subject: {msg['Subject']}\n\n{msg['Body']}"正在用字符串覆蓋消息 object msg 。 它不是必需的，可能會被刪除。

2. 要發送消息 object（而不是字符串），請使用SMTP.send_message 。

這段代碼應該可以工作：

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)