如何在使用 Python 的 smtplib 发送的电子邮件中获得换行符? [英] How to get line breaks in e-mail sent using Python's smtplib?

问题描述

我编写了一个脚本，可将消息写入文本文件并将其作为电子邮件发送.一切都很顺利，除了电子邮件最终似乎都在一行中.

I have written a script that writes a message to a text file and also sends it as an email. Everything goes well, except the email finally appears to be all in one line.

我通过 添加换行符，它适用于文本文件，但不适用于电子邮件.您知道可能的原因是什么吗?

I add line breaks by and it works for the text file but not for the email. Do you know what could be the possible reason?

这是我的代码:

import smtplib, sys
import traceback
def send_error(sender, recipient, headers, body):

    SMTP_SERVER = 'smtp.gmail.com'
    SMTP_PORT = 587
    session = smtplib.SMTP('smtp.gmail.com', 587)
    session.ehlo()
    session.starttls()
    session.ehlo
    session.login(sender, 'my password')
    send_it = session.sendmail(sender, recipient, headers + "

" +  body)
    session.quit()
    return send_it


SMTP_SERVER = 'smtp.gmail.com'
SMTP_PORT = 587
sender = '[e-mail]'
recipient = '[e-mail]'
subject = 'report'
body = "Dear Student, 
 Please send your report
 Thank you for your attention"
open('student.txt', 'w').write(body) 

headers = ["From: " + sender,
               "Subject: " + subject,
               "To: " + recipient,
               "MIME-Version: 1.0",
               "Content-Type: text/html"]
headers = "
".join(headers)
send_error(sender, recipient, headers, body)

推荐答案

您已声明您的消息正文包含 HTML 内容 ("Content-Type: text/html").换行符的 HTML 代码是
.您应该将内容类型更改为 text/plain 或使用 HTML 标记作为换行符而不是纯 ，因为后者在呈现 HTML 文档时会被忽略.

You have your message body declared to have HTML content ("Content-Type: text/html"). The HTML code for line break is <br>. You should either change your content type to text/plain or use the HTML markup for line breaks instead of plain as the latter gets ignored when rendering a HTML document.

作为旁注，还可以查看电子邮件包.有一些类可以为您简化电子邮件消息的定义(带有示例).

As a side note, also have a look at the email package. There are some classes that can simplify the definition of E-Mail messages for you (with examples).

例如您可以尝试(未经测试):

For example you could try (untested):

import smtplib
from email.mime.text import MIMEText

# define content
recipients = ["[e-mail]"]
sender = "[e-mail]"
subject = "report reminder"
body = """
Dear Student,
Please send your report
Thank you for your attention
"""

# make up message
msg = MIMEText(body)
msg['Subject'] = subject
msg['From'] = sender
msg['To'] = ", ".join(recipients)

# sending
session = smtplib.SMTP('smtp.gmail.com', 587)
session.starttls()
session.login(sender, 'my password')
send_it = session.sendmail(sender, recipients, msg.as_string())
session.quit()

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