Encoding mail subject (SMTP) in Python with non-ASCII characters

Question

I am using Python module MimeWriter to construct a message and smtplib to send a mail constructed message is:

file msg.txt:
--------------------         


        

Answer 1

From http://docs.python.org/library/email.header.html

from email.message import Message
from email.header import Header
msg = Message()
msg['Subject'] = Header('主題', 'utf-8')
print msg.as_string()

Subject: =?utf-8?b?5Li76aGM?=

more simple:

from email.header import Header
print Header('主題', 'utf-8').encode()

=?utf-8?b?5Li76aGM?=