Python电子邮件发送TypeError:预期的字符串或缓冲区

Question

好吧,伙计们,我已经在网上看了很多年,根本找不到答案.我尝试过很多建议,但似乎无法让它发挥作用.我正在尝试使用python(smtplib和电子邮件模块)和gmail服务发送电子邮件.这是我导入的包:

import time, math, urllib2, urllib, os, shutil, zipfile, smtplib, sys
from email.mime.text import MIMEText

这是我发送电子邮件的def语句:

def sendmessage():
print('== You are now sending an email to Hoxie. Please write your username below. ==')
mcusername = str(raw_input('>> Username: '))
print('>> Now your message.')
message = str(raw_input('>> Message: '))
print('>> Attempting connection to email host...')
fromaddr = 'x@gmail.com'
toaddrs = 'xx@gmail.com'
username = 'x@gmail.com'
password = '1013513403'
server = smtplib.SMTP('smtp.gmail.com:587')
subject = 'Email from',mcusername
content = message
msg = MIMEText(content)
msg['From'] = fromaddr
msg['To'] = toaddrs
msg['Subject'] = subject
try:
    server.ehlo()
    server.starttls()
    server.ehlo()
except:
    print('!! Could not connect to email host! Check internet connection! !!')
    os.system('pause')
    main()
else:
    print('>> Connected to email host! Attempting secure login via SMTP...')
    try:
        server.login(username,password)
    except:
        print('!! Could not secure connection! Stopping! !!')
        os.system('pause')
        main()
    else:
        print('>> Login succeeded! Attempting to send message...')
        try:
            server.sendmail(fromaddr, toaddrs, msg)
        except TypeError as e:
            print e
            print('Error!:', sys.exc_info()[0])
            print('!! Could not send message! Check internet connection! !!')
            os.system('pause')
            main()
        else:
            server.quit()
            print('>> Message successfully sent! I will respond as soon as possible!')
            os.system('pause')
            main()

我已经调试了广泛但我敢于得到这个:

>> Login succeeded! Attempting to send message...
TypeError: expected string or buffer

这意味着它成功登录但在尝试发送消息时停止了.令我难以置信的一点是,它并没有指向何处.此外,我的编码可能不是那么好,所以没有网络欺凌.

任何帮助将不胜感激!谢谢.

Answer 1

崩溃的线是

server.sendmail(fromaddr, toaddrs, msg)

你给它两个字符串和一个MIMEText实例; 它希望以字符串的形式发送消息.[我认为它也希望列表形式的地址,但它特殊情况下一个字符串.]例如,您可以查看文档中的示例:

s = smtplib.SMTP('localhost')
s.sendmail(me, [you], msg.as_string())
s.quit()

您必须将MIMEText转换为字符串,以便sendmail感到高兴.修复了@jdi指出的主题错误(生成"AttributeError:'tuple'对象没有属性'lstrip'"消息)并将msg更改为msg.as_string(),你的代码适合我.

Answer 2

我的猜测是罪魁祸首是这一行：

subject = 'Email from',mcusername

如果您希望将主题创建为字符串，那么它实际上会被制作成元组，因为您传递了两个值。您可能想做的是：

subject = 'Email from %s' % mcusername

另外，对于调试方面...包装所有异常并仅打印异常消息的方式会丢弃有用的回溯（如果有的话）。您是否尝试过在真正知道要处理的特定异常之前不包装所有内容？当出现语法错误时，像这样进行全面的异常处理会使调试变得更加困难。