Mark Sapiro <[email protected]> added the comment:
I work around it with
```
class Message(email.message.Message):
def as_string(self):
# Work around for https://bugs.python.org/issue27321 and
# https://bugs.python.org/issue32330.
try:
value = email.message.Message.as_string(self)
except (KeyError, LookupError, UnicodeEncodeError):
value = email.message.Message.as_bytes(self).decode(
'ascii', 'replace')
# Also ensure no unicode surrogates in the returned string.
return email.utils._sanitize(value)
```
This is easy for me because it's Mailman which already subclasses
email.message.Message for other reasons. It is perhaps more difficult if you
aren't already subclassing email.message.Message for other purposes.
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<https://bugs.python.org/issue27321>
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