python3 plugins?

Claghorn · 11-12-2019, 02:36 PM

Fedora 31 appears to come with a python3 calibre: calibre-4.1.0-1.fc31.x86_64.

I can load plugins such as "modify epub", but they barf when I actually try to run them.

How many years is it likely to take for all plugins to be compatible with python 3?

Should calibre know about compatibility when searching for plugins? (Perhaps look in a different URL for compatible plugins).

Meanwhile, I've setup a fedora 30 virtual machine dedicated to running an older calibre where all the plugins work, so I can do any editing I need, then load the final version into my fedora 31 calibre (sigh). A pain, but it works.

DaltonST · 11-12-2019, 03:12 PM

My 15 plugins are as Python3 compatible as I can make them without ever testing them with a Py3 Calibre 4+ using Windows 10 1903. I am surprised you have a Linux one; Kovid has not released even an Alpha test version for Win10.

DaltonST

davidfor · 11-12-2019, 05:47 PM

As always, if you see errors with a plugin, post the errors in the plugins thread. They are far more likely to get some attention that way.

Also, the general rule for Linux distributions included versions of calibre applies: If it doesn't work, get the official calibre distribution. Far to many distributions break things.

jhowell · 11-12-2019, 07:56 PM

While calibre will compile under Python 3, as far as I know the effort to get it fully working in that environment is not yet complete. Use at your own risk. If you come across broken functionality report it on the calibre bug tracker.

kovidgoyal · 11-12-2019, 07:57 PM

As far as I know no calibre plugins are python 3 compatible. If you use plugins you should use the official calibre binaries, which still use python 2.

11-12-2019, 02:36 PM	#1
Claghorn Member Posts: 16 Karma: 10 Join Date: Aug 2012 Device: Nexus 7	python3 plugins? Fedora 31 appears to come with a python3 calibre: calibre-4.1.0-1.fc31.x86_64. I can load plugins such as "modify epub", but they barf when I actually try to run them. How many years is it likely to take for all plugins to be compatible with python 3? Should calibre know about compatibility when searching for plugins? (Perhaps look in a different URL for compatible plugins). Meanwhile, I've setup a fedora 30 virtual machine dedicated to running an older calibre where all the plugins work, so I can do any editing I need, then load the final version into my fedora 31 calibre (sigh). A pain, but it works.

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11-12-2019, 03:12 PM	#2
DaltonST Deviser Posts: 2,265 Karma: 2090983 Join Date: Aug 2013 Location: Texas Device: none	My 15 plugins are as Python3 compatible as I can make them without ever testing them with a Py3 Calibre 4+ using Windows 10 1903. I am surprised you have a Linux one; Kovid has not released even an Alpha test version for Win10. DaltonST

11-12-2019, 05:47 PM	#3
davidfor Grand Sorcerer Posts: 24,906 Karma: 47303748 Join Date: Jul 2011 Location: Sydney, Australia Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos	As always, if you see errors with a plugin, post the errors in the plugins thread. They are far more likely to get some attention that way. Also, the general rule for Linux distributions included versions of calibre applies: If it doesn't work, get the official calibre distribution. Far to many distributions break things.

11-12-2019, 07:56 PM	#4
jhowell Grand Sorcerer Posts: 6,522 Karma: 84500001 Join Date: Nov 2011 Location: Tampa Bay, Florida Device: Kindles	While calibre will compile under Python 3, as far as I know the effort to get it fully working in that environment is not yet complete. Use at your own risk. If you come across broken functionality report it on the calibre bug tracker.

11-12-2019, 07:57 PM	#5
kovidgoyal creator of calibre Posts: 43,933 Karma: 22669822 Join Date: Oct 2006 Location: Mumbai, India Device: Various	As far as I know no calibre plugins are python 3 compatible. If you use plugins you should use the official calibre binaries, which still use python 2.

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