a strange error

[kovidgoyal]

Dont use relativeimport use absolute imports they are always safer

[un_pogaz]

Originally Posted by kovidgoyal

Dont use relativeimport use absolute imports they are always safer

I try that too, didn't work either.

[kovidgoyal]

If the import is still failing put it in a try except block and print the traceback for the exception to a file. The traceback should tell you why the import is failing.

[un_pogaz]

Originally Posted by kovidgoyal

If the import is still failing put it in a try except block and print the traceback for the exception to a file. The traceback should tell you why the import is failing.

Nope, either.
I used the following code:

try:
    print('>>>>>>>>>>>>>>>>>>')
    from ..action import read_metadata
except Exception:
    print('>traceback>')
    import traceback
    traceback.print_exc()
    raise

and no traceback; The second print('>traceback>') is not even called.

Some thing go wrong enough badly to skip the local try except block and directly raise a exception on the worker level.
The better thing I can suggest is try it on your side, with the last version of "ePub Extended Metadata"
the file here alway raise the error
https://www.mobileread.com/forums/sh...1&postcount=12

[kovidgoyal]

That would impl your import is crashing the interpreter. So you need to put print statements into the action.py file and see where it is crashing.

[un_pogaz]

Yeah, but action.py is the file that contain the InterfaceAction inhertied class used in the GUI, and is therefore loaded when launching Calibre. And it do perfectly fine.

But that import fail. And is not a simple import error, else be sure I would have spotted it and corrected it. No, somehow, something catastrophically bad happen to crash the worker itself.

calibre, version 9.10.0
ERREUR : Impossible d'ajouter les livres: Échec lors de l'ajout de certains livres, cliquez sur "Afficher les détails" pour plus d'information.

Worker process crashed while executing job
Traceback (most recent call last):
  File "calibre/utils/ipc/pool.py", line 106, in recv
  File "calibre/utils/ipc/__init__.py", line 20, in eintr_retry_call
  File "multiprocessing/connection.py", line 226, in recv_bytes
  File "multiprocessing/connection.py", line 451, in _recv_bytes
  File "multiprocessing/connection.py", line 420, in _recv
EOFError

[JSWolf]

@un_pogaz I have another strange error with your plugin. I installed the version in the plugin thread and was unable to uninstall it. I uninstalled it by using the last config backup prior to installing it.

[un_pogaz]

"ePub Extended Metadata" contain 2 companion plugin named "ePub Extended Metadata {Reader}" and "ePub Extended Metadata {Writer}" that are intergrated with with it (and virtually installed). You can't uninstall that 2 companion plugins individualy.

You need to unistall the main "ePub Extended Metadata".

[JSWolf]

Originally Posted by un_pogaz

"ePub Extended Metadata" contain 2 companion plugin named "ePub Extended Metadata {Reader}" and "ePub Extended Metadata {Writer}" that are intergrated with with it (and virtually installed). You can't uninstall that 2 companion plugins individualy.

You need to unistall the main "ePub Extended Metadata".

I'll try it when I get a chance. Thanks.

[kovidgoyal]

If it's already imported then importing it again should only bump its reference count and have no other effect.

[un_pogaz]

Originally Posted by kovidgoyal

If it's already imported then importing it again should only bump its reference count and have no other effect.

Agree. But the error exist.

I would really appreciate it if you could look into the problem, in case it a top-level calibre issue, because right now my plugin is dead and I've done everything I can.
I'm not request this lightly, Kovid, it's too weird to be just a problem on the plugin developer's end.

[kovidgoyal]

What happens if your run

calibredb add bad-file.epub

in a windows command prompt

[un_pogaz]

calibredb add bad-zip.epub 
QPixmap: Must construct a QGuiApplication before a QPixmap
Abandon                    (core dumped)calibredb add bad-zip.epub

Oh oh. That... unexpected.
So I know Qt that call a QPixmap before QGuiApplication is a garranted crash.
That is something I can work on.
I will investigate that, thanks for the command, I never thought to that to get a clearest log rather than the gui one

But how, how?
(maybe because I use quite twisted hacky way on ePub Extended Metadata)

[un_pogaz]

FIXED.

ePub Extended Metadata work again.

Thanks for your time Kovid. At the end it was only a error on the plugin side, but a odd one since it was part of Qt hard behavior.

[DragoLord19d]

well... I'm glad I could help more people with this post. I just figured I'd messed something up