TypeError:'NoneType'对象不可迭代:smtplib

时间:2012-10-02 07:37:37

标签: python smtp smtplib

    def sendmail(self, from_addr, to_addrs, msg='hello', mail_options=[],rcpt_options=[]):
            self.ehlo_or_helo_if_needed()
            esmtp_opts = []
            if self.does_esmtp:
                    # Hmmm? what's this? -ddm
                    # self.esmtp_features['7bit']=""
                    if self.has_extn('size'):
                                esmtp_opts.append("size=%d" % len(msg))
                    for option in mail_options:
                            esmtp_opts.append(option)

            (code, resp) = self.mail(from_addr, esmtp_opts)
            if code != 250:
                self.rset()
                #raise SMTPSenderRefused(code, resp, from_addr)
            senderrs = {}
            if isinstance(to_addrs, basestring):
                to_addrs = [to_addrs]
            for each in to_addrs:
                (code, resp) = self.rcpt(each, rcpt_options)
                if (code != 250) and (code != 251):
                    senderrs[each] = (code, resp)
            if len(senderrs) == len(to_addrs):
                # the server refused all our recipients
                self.rset()
                #raise SMTPRecipientsRefused(senderrs)
            (code, resp) = self.data(msg)
            if code != 250:
                self.rset()
                #raise SMTPDataError(code, resp)
            #if we got here then somebody got our mail
            return senderrs

我正在尝试构建自己的smtplib。我得到TypeError:'NoneType'对象在我尝试时不可迭代 (code,resp)= self.data(msg)

self.data()定义为 - 我正在使用self.data()将消息放入服务器。

    def data(self, msg):
            self.putcmd("data")
            (code, repl) = self.getreply()
            if self.debuglevel > 0:
                    print>>stderr, "data:", (code, repl)
            if code != 354:
                    #raise SMTPDataError(code, repl)
                    print "Err"
            else:
                    q = quotedata(msg)
                    if q[-2:] != CRLF:
                            q = q + CRLF
                    q = q + "." + CRLF
                    self.send(q)
                    (code, msg) = self.getreply()
                    if self.debuglevel > 0:
                            print>>stderr, "data:", (code, msg)
                    return (code, msg)

1 个答案:

答案 0 :(得分:1)

我们无法从代码中判断您已发布了self.data()正在执行的操作,但从错误中可以清楚地看出它正在返回None。如果你试图解包无,你得到这个:

>>> (code, resp) = None
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'NoneType' object is not iterable

发布self.data()的代码可能有所帮助。

发布额外代码后

更新:

代码(code, repl) = self.getreply()也可以解包None [注意:self.data()]中有两个这样的实例。 self.data()sendmail()中是否引发了异常?

另外

if code != 354:
            #raise SMTPDataError(code, repl)
            print "Err"
else:
    ...

如果你得到代码354,你已注释掉raise,现在该函数返回None。这可能也是问题所在。