porting plugin to python3 help

lizard-cooker · 07-05-2021, 03:58 PM

Hello. I was looking into porting the Xray-creator plugin to python3. So far I have only tried to edit an import in it's ui.py file, that imports the now renamed httplib. I downloaded the plugin, unzipped it and changed that single line of code. Despite the minor change, when I try to load the plugin from file it now says:
calibre.customize.InvalidPlugin: The plugin in '/home/username/Downloads/xray_creator_calibre_plugin_3_2_1.zip' is invalid. It does not contain a top-level __init__.py file
even though the plugin clearly contains one, and when I try to load the original plugin it does not give such error.
What could I possibly be missing?

BetterRed · 07-05-2021, 05:44 PM

Moderator Notice

Did you try looking through this thread ==>> Attn plugin devs: porting to python 3

And I'll move this to the Development subforum

BR

davidfor · 07-05-2021, 09:20 PM

The usual reason for that is zipping up the plugin incorrectly. You probably have zipped up the files so that the plugin files are in a directory inside the zip file, rather than them being in the top level.

Alternatively, it is exactly as the error said and you are missing the "__init__.py" file.

For either of these, if you look at the structure of the current version of the file, you should be able to see what is wrong. Otherwise, post your copy in the thread and we can look at it.

jhowell · 07-05-2021, 10:25 PM

Quote:

Originally Posted by lizard-cooker

Hello. I was looking into porting the Xray-creator plugin to python3.

FYI the WordDumb plugin can create X-ray files and already supports Python 3.

lizard-cooker · 07-06-2021, 04:22 AM

Quote:

Originally Posted by davidfor

The usual reason for that is zipping up the plugin incorrectly. You probably have zipped up the files so that the plugin files are in a directory inside the zip file, rather than them being in the top level.

Alternatively, it is exactly as the error said and you are missing the "__init__.py" file.

For either of these, if you look at the structure of the current version of the file, you should be able to see what is wrong. Otherwise, post your copy in the thread and we can look at it.

that you! this worked!

lizard-cooker · 07-06-2021, 04:36 AM

Quote:

Originally Posted by jhowell

FYI the WordDumb plugin can create X-ray files and already supports Python 3.

I know... but it doesn't work for me :/

07-05-2021, 03:58 PM	#1
lizard-cooker Junior Member Posts: 7 Karma: 10 Join Date: Jul 2021 Location: Israel Device: Kindle PaperWhite 3 (2015) WiFi	porting plugin to python3 help Hello. I was looking into porting the Xray-creator plugin to python3. So far I have only tried to edit an import in it's ui.py file, that imports the now renamed httplib. I downloaded the plugin, unzipped it and changed that single line of code. Despite the minor change, when I try to load the plugin from file it now says: calibre.customize.InvalidPlugin: The plugin in '/home/username/Downloads/xray_creator_calibre_plugin_3_2_1.zip' is invalid. It does not contain a top-level __init__.py file even though the plugin clearly contains one, and when I try to load the original plugin it does not give such error. What could I possibly be missing?

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07-05-2021, 05:44 PM	#2
BetterRed null operator (he/him) Posts: 21,714 Karma: 29711016 Join Date: Mar 2012 Location: Sydney Australia Device: none	Moderator Notice Did you try looking through this thread ==>> Attn plugin devs: porting to python 3 And I'll move this to the Development subforum BR

07-05-2021, 09:20 PM	#3
davidfor Grand Sorcerer Posts: 24,905 Karma: 47303824 Join Date: Jul 2011 Location: Sydney, Australia Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos	The usual reason for that is zipping up the plugin incorrectly. You probably have zipped up the files so that the plugin files are in a directory inside the zip file, rather than them being in the top level. Alternatively, it is exactly as the error said and you are missing the "__init__.py" file. For either of these, if you look at the structure of the current version of the file, you should be able to see what is wrong. Otherwise, post your copy in the thread and we can look at it.

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