概述
我想要实现的是将包含纯UTF-8文本的MIME部分编码为引用的可打印文件,而不是base64.虽然所有功能都在库中可用,但我没有使用它:
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
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可打印文件,双重传输编码标题最后是奇怪的(如果不是非法的).
如何在mime-message中将我的文本编码为引用的可打印文件?
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)
现在消息似乎被正确编码:
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',charset='utf-8') utf8qp=email.charset.Charset('utf-8') utf8qp.body_encoding=email.charset.QP self.set_payload(payload,charset=utf8qp)
并使用它:
m = MIMEUTF8QPText(u'This is the text containing ünicöde') m.as_string()
总结
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