Python支持一个功能强大的MIME-Library,称为email.mime
。
我想要实现的是将包含纯UTF-8文本的MIME部分编码为带引号的printables而不是base64。虽然库中提供了所有功能,但我没有设法使用它:
示例:
import email.mime.text, email.encoders
m=email.mime.text.MIMEText(u'This is the text containing ünicöde', _charset='utf-8')
m.as_string()
# => Leads to a base64-encoded message, as base64 is the default.
email.encoders.encode_quopri(m)
m.as_string()
# => Leads to a strange message
最后一个命令导致一条奇怪的信息:
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64
Content-Transfer-Encoding: quoted-printable
GhpcyBpcyB0aGUgdGV4dCBjb250YWluaW5nIMO8bmljw7ZkZQ=3D=3D
这显然不是编码为引用的printables,双transfer-encoding
标题最后是奇怪的(如果不是非法的)。
如何在mime-message中将我的文本编码为带引号的printables?
答案 0 :(得分:9)
好的,我得到了一个非常hacky的解决方案,但至少它导致了某个方向:MIMEText
假设base64并且我不知道如何改变它。出于这个原因,我使用MIMENonMultipart
:
import email.mime, email.mime.nonmultipart, email.charset
m=email.mime.nonmultipart.MIMENonMultipart('text', 'plain', charset='utf-8')
#Construct a new charset which uses Quoted Printables (base64 is default)
cs=email.charset.Charset('utf-8')
cs.body_encoding = email.charset.QP
#Now set the content using the new charset
m.set_payload(u'This is the text containing ünicöde', charset=cs)
现在消息似乎编码正确:
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable
This is the text containing =C3=BCnic=C3=B6de
甚至可以构建一个隐藏复杂性的新类:
class MIMEUTF8QPText(email.mime.nonmultipart.MIMENonMultipart):
def __init__(self, payload):
email.mime.nonmultipart.MIMENonMultipart.__init__(self, 'text', 'plain',
charset='utf-8')
utf8qp=email.charset.Charset('utf-8')
utf8qp.body_encoding=email.charset.QP
self.set_payload(payload, charset=utf8qp)
并像这样使用它:
m = MIMEUTF8QPText(u'This is the text containing ünicöde')
m.as_string()
答案 1 :(得分:5)
改编自issue 1525919并在python 2.7上测试:
from email.Message import Message
from email.Charset import Charset, QP
text = "\xc3\xa1 = \xc3\xa9"
msg = Message()
charset = Charset('utf-8')
charset.header_encoding = QP
charset.body_encoding = QP
msg.set_charset(charset)
msg.set_payload(msg._charset.body_encode(text))
print msg.as_string()
会给你:
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: quoted-printable
=C3=A1 =3D =C3=A9
另请参阅Python提交者的this response。
答案 2 :(得分:2)
您不需要黑客:
import email
# Construct a new charset which uses Quoted Printables (base64 is default)
cs = email.charset.Charset('utf-8')
cs.body_encoding = email.charset.QP
m = email.mime.text.MIMEText(u'This is the text containing ünicöde', 'plain', _charset=cs)
print(m.as_string())