The upcoming Python 3.13 will remove the built-in module imghdr.
Its mimetype-sniffing functionality was copied into email.mime, so I switched to it in flanker/mime/message/part.py.
The same file also uses email.mime.audio._whatsnd, but since it's an internal underscore-prefixed function, it's not part of the stable API and was renamed in Python 3.11.
Instead of using email.mime.audio._whatsnd/_what and imghdr/email.mime.image._what, I think it's safer to use the stable wrapper classes MIMEAudio, MIMEImage, even though they require a bit more work to extract the sniffed content type.
If you disagree, I can switch back to using the internal function.
I tested this with Python 3.10 - please test with 2.7.
BTW, another deprecated module is cgi, which webob uses, but there's an open issue about it upstream, and I'm waiting to see if they intend to release a new version.
The upcoming Python 3.13 will remove the built-in module
imghdr.Its mimetype-sniffing functionality was copied into
email.mime, so I switched to it inflanker/mime/message/part.py.The same file also uses
email.mime.audio._whatsnd, but since it's an internal underscore-prefixed function, it's not part of the stable API and was renamed in Python 3.11.Instead of using
email.mime.audio._whatsnd/_whatandimghdr/email.mime.image._what, I think it's safer to use the stable wrapper classesMIMEAudio,MIMEImage, even though they require a bit more work to extract the sniffed content type.If you disagree, I can switch back to using the internal function.
I tested this with Python 3.10 - please test with 2.7.
BTW, another deprecated module is
cgi, whichwebobuses, but there's an open issue about it upstream, and I'm waiting to see if they intend to release a new version.