这段代码工作,并向我发送电子邮件就好:
import smtplib
#SERVER = "localhost"
FROM = 'monty@python.com'
TO = ["jon@mycompany.com"] # must be a list
SUBJECT = "Hello!"
TEXT = "This message was sent with Python's smtplib."
# Prepare actual message
message = """\
From: %s
To: %s
Subject: %s
%s
""" % (FROM, ", ".join(TO), SUBJECT, TEXT)
# Send the mail
server = smtplib.SMTP('myserver')
server.sendmail(FROM, TO, message)
server.quit()
然而,如果我试图将它包装在这样一个函数中:
def sendMail(FROM,TO,SUBJECT,TEXT,SERVER):
import smtplib
"""this is some test documentation in the function"""
message = """\
From: %s
To: %s
Subject: %s
%s
""" % (FROM, ", ".join(TO), SUBJECT, TEXT)
# Send the mail
server = smtplib.SMTP(SERVER)
server.sendmail(FROM, TO, message)
server.quit()
我得到以下错误:
Traceback (most recent call last):
File "C:/Python31/mailtest1.py", line 8, in <module>
sendmail.sendMail(sender,recipients,subject,body,server)
File "C:/Python31\sendmail.py", line 13, in sendMail
server.sendmail(FROM, TO, message)
File "C:\Python31\lib\smtplib.py", line 720, in sendmail
self.rset()
File "C:\Python31\lib\smtplib.py", line 444, in rset
return self.docmd("rset")
File "C:\Python31\lib\smtplib.py", line 368, in docmd
return self.getreply()
File "C:\Python31\lib\smtplib.py", line 345, in getreply
raise SMTPServerDisconnected("Connection unexpectedly closed")
smtplib.SMTPServerDisconnected: Connection unexpectedly closed
有人能告诉我为什么吗?
我对发送电子邮件的包选项不满意,我决定制作并开源我自己的电子邮件发送器。它易于使用,并支持高级用例。
如何安装:
pip install redmail
用法:
from redmail import EmailSender
email = EmailSender(
host="<SMTP HOST ADDRESS>",
port=<PORT NUMBER>,
)
email.send(
sender="me@example.com",
receivers=["you@example.com"],
subject="An example email",
text="Hi, this is text body.",
html="<h1>Hi,</h1><p>this is HTML body</p>"
)
如果您的服务器需要用户和密码,只需将user_name和密码传递给EmailSender。
我在send方法中包含了很多特性:
包含附件
将图像直接包含到HTML主体中
金贾的模板
漂亮的HTML表格开箱即用
文档:
https://red-mail.readthedocs.io/en/latest/
源代码:https://github.com/Miksus/red-mail
在缩进函数中的代码时(这是可以的),还缩进了原始消息字符串的行。但是前导空白意味着标题行的折叠(连接),如RFC 2822 - Internet Message Format的2.2.3和3.2.3节所述:
每个报头字段在逻辑上是由一行字符组成的
字段名、冒号和字段主体。为了方便
但是,为了处理每行998/78个字符的限制,
报头字段的字段主体部分可以分成多个
线表示;这叫做“折叠”。
在sendmail调用的函数形式中,所有行都以空白开始,因此是“展开的”(连接),您正在尝试发送
From: monty@python.com To: jon@mycompany.com Subject: Hello! This message was sent with Python's smtplib.
与我们的想法不同,smtplib将不再理解To:和Subject:头文件,因为这些名称只在一行的开头被识别。相反,smtplib将假设一个非常长的发送者电子邮件地址:
monty@python.com To: jon@mycompany.com Subject: Hello! This message was sent with Python's smtplib.
这将不起作用,因此出现异常。
解决方案很简单:只保留原来的消息字符串。这可以通过一个函数来完成(正如Zeeshan建议的那样),也可以直接在源代码中完成:
import smtplib
def sendMail(FROM,TO,SUBJECT,TEXT,SERVER):
"""this is some test documentation in the function"""
message = """\
From: %s
To: %s
Subject: %s
%s
""" % (FROM, ", ".join(TO), SUBJECT, TEXT)
# Send the mail
server = smtplib.SMTP(SERVER)
server.sendmail(FROM, TO, message)
server.quit()
现在展开没有发生,你发送
From: monty@python.com
To: jon@mycompany.com
Subject: Hello!
This message was sent with Python's smtplib.
这就是您的旧代码所做的工作。
请注意,我还保留了标题和正文之间的空行,以适应RFC的第3.5节(这是必需的),并根据Python风格指南PEP-0008(这是可选的)将include放在函数之外。