尝试使用smtp发送简单信件时出现UnicodeDecodeError

Question

我用smtplib发简单的信有问题。我的程序在这一行smtplib.SMTP('smtp.gmail.com', port=587)关闭，错误为：UnicodeDecodeError: 'utf-8' codec can't decode byte 0xcf in position 7: invalid continuation byte。如何解决这个问题？你知道吗

文件编码：UTF-8（所有符号均为英文）

Python版本：3.6.4

完整程序：

import smtplib
from email.message import EmailMessage

mail_addr = "myemail@gmail.com"

msg = EmailMessage()
msg['From'] = mail_addr
msg['To'] = "myemail@gmail.com"
msg['Subject'] = "Hello!"
msg.set_content('Email body')

email_address = "myemail@gmail.com"
email_password = "password"

body = "Hello, world!"

server = smtplib.SMTP('smtp.gmail.com', port=587)
server.ehlo()
server.starttls()
server.login(email_address, email_password)
server.send_message(msg=msg, from_addr=mail_addr, to_addrs=mail_addr)

print('Email sent successfully')

全输出：

Traceback (most recent call last):
  File "C:\Program Files\JetBrains\PyCharm Community Edition 2017.3.3\helpers\pydev\pydev_run_in_console.py", line 53, in run_file
    pydev_imports.execfile(file, globals, locals)  # execute the script
  File "C:\Program Files\JetBrains\PyCharm Community Edition 2017.3.3\helpers\pydev\_pydev_imps\_pydev_execfile.py", line 18, in execfile
    exec(compile(contents+"\n", file, 'exec'), glob, loc)
  File "C:/MyPrograms/Python/docsCreator/main/starter.py", line 21, in <module>
    server = smtplib.SMTP('smtp.gmail.com', port=587)
  File "C:\Users\Dmitry\AppData\Local\Programs\Python\Python36-32\Lib\smtplib.py", line 261, in __init__
    fqdn = socket.getfqdn()
  File "C:\Users\Dmitry\AppData\Local\Programs\Python\Python36-32\Lib\socket.py", line 673, in getfqdn
    hostname, aliases, ipaddrs = gethostbyaddr(name)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xcf in position 7: invalid continuation byte
PyDev console: starting.

Answer 1

你的主机名有问题吗？ 从socket.py：

def getfqdn(name=''):
    name = name.strip()
    if not name or name == '0.0.0.0':
        name = gethostname()
    try:
        hostname, aliases, ipaddrs = gethostbyaddr(name)
    except error:
        pass
...

socket.gethostname()的输出是什么？你知道吗