分别尝试了多个 to 和多个 cc，效果很好，但是当我尝试两者时，出现错误：
文件
“path\Continuum\anaconda2\envs\mypython\lib\smtplib.py”，第 870 行，在 sendmail senderrs[each] = (code, resp) TypeError: unhashable type: 'list'"
代码：
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.mime.image import MIMEImage
from email.mime.application import MIMEApplication
strFrom = 'fasdf@dfs.com'
cc='abc.xyz@dfa.com, sdf.xciv@lfk.com'
to='sadf@sdfa.com,123.lfadf@fa.com'
msg = MIMEMultipart('related')
msg['Subject'] = 'Subject'
msg['From'] = strFrom
msg['To'] =to
msg['Cc']=cc
#msg['Bcc']= strBcc
msg.preamble = 'This is a multi-part message in MIME format.'
msgAlternative = MIMEMultipart('alternative')
msg.attach(msgAlternative)
msgText = MIMEText('This is the alternative plain text message.')
msgAlternative.attach(msgText)
msgText = MIMEText('''<html>
<body><p>Hello<p>
</body>
</html> '''.format(**locals()), 'html')
msgAlternative.attach(msgText)
import smtplib
smtp = smtplib.SMTP()
smtp.connect('smtp address')
smtp.ehlo()
smtp.sendmail(strFrom, to, msg.as_string())
smtp.quit()
小智 7
附加的Toorfrom应该是一个字符串，sendmail 应该始终采用列表的形式。
cc=['abc.xyz@dfa.com', 'sdf.xciv@lfk.com']
to=['sadf@sdfa.com','123.lfadf@fa.com']
msg['To'] =','.join(to)
msg['Cc']=','.join(cc)
toAddress = to + cc
smtp.sendmail(strFrom, toAddress, msg.as_string())
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