Running from Source - Nothing Happens

jsonnabend · January 21, 2022, 5:44pm

I am a newbie to Python, so apologies.

I am trying to run Picard from source in the PyCharm debugger. The code runs (it stops on break points), but then exits with error code 0. The UI never appears.

I must be missing something obvious.

outsidecontext · January 21, 2022, 6:44pm

Do you get any console output why it crashes? You should also try running it with python3 tagger.py --debug to more detailed logging. Maybe this gives some clue.

Also make sure you have the dependencies installed via pip and see the instructions for running from source at

github.com

metabrainz/picard/blob/master/INSTALL.md#running-from-the-source-tree

MusicBrainz Picard Installation
===============================

Dependencies
------------

Before installing Picard from source, you need to check you have the following dependencies installed.

Required:

* [Python 3.6 or newer](http://python.org/download)
* [PyQt 5.11 or newer](http://www.riverbankcomputing.co.uk/software/pyqt/download)
* [Mutagen 1.37 or newer](https://mutagen.readthedocs.io/)
* [PyYAML 5.1 or newer](https://pyyaml.org/)
* [python-dateutil](https://dateutil.readthedocs.io/en/stable/)
* gettext:
  * [Windows](https://mlocati.github.io/articles/gettext-iconv-windows.html)
* a compiler
  * Windows should work with [Visual C++ 2008 Express](http://go.microsoft.com/?linkid=7729279)

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jsonnabend · January 23, 2022, 5:43pm

Thanks for writing back. I figured out what was going on, although my solution is probably a bit of a kludge.

I was running tagger.py. There was no call to main(). I added that at the end, which probably isn’t the right solution, but it works.

outsidecontext · January 23, 2022, 6:58pm

The actual start script is tagger.py in the topmost folder. You need to run python3 setup.py build to generate it from tagger.py.in

github.com

metabrainz/picard/blob/master/tagger.py.in

#!/usr/bin/env python3

import os
import sys


sys.path.insert(0, '.')

# This is needed to find resources when using pyinstaller
if getattr(sys, 'frozen', False):
    basedir = getattr(sys, '_MEIPASS', '')
else:
    basedir = os.path.dirname(os.path.abspath(__file__))

try:
    from picard.tagger import main
    main(os.path.join(basedir, 'locale'), %(autoupdate)s)
except SystemExit:
    raise  # Just continue with a normal application exit
except:  # noqa: E722,F722 # pylint: disable=bare-except

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jsonnabend · January 24, 2022, 2:57pm

Awesome, thanks so much for the help. On to the next issue in a new thread.