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I'm writing a plugin for QGIS (3.10) in Python. I would like to follow the execution of the script line by line to understand some bugs. I installed Remote Debug plugin and tried to connect it with :

  • PyDev (Eclipse). I configured all as explained here: How to set up Eclipse to develop QGIS scripts or plugins. But executing the plugin in QGIS still has no effect in Eclipse.

  • Winpdb-reborn, but a window is opening in winpdpb showing the code of Remote Debug plugin and highlighting this line:

    def statusBar(self): 
    return self.iface.mainWindow().statusBar()

  • Eric6, and the connection seems to be OK in Eric6, but QGIS freezes as I click on "Connect" in Remote Debug.

  • First Aid plugin seems not to be compatible with QGIS 3.

I don't know in what direction to go now. Does someone have a working solution to debug plugin in QGIS 3?

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    I would love to be able to run a proper debugger on a python script in qgis, but what I have ended up doing is using print() statements that will end up in the python console. Crude, but it has helped me a lot of times.
    – MortenSickel
    Commented Feb 28, 2020 at 9:08
  • That's an option, but in my case, my script creates some empty layers, and i would like to understand when. I'm not sure a print() can help. I think i really need to control the execution line by line
    – Cupain
    Commented Feb 28, 2020 at 9:13
  • Some years ago using pyCharm I got remote debugging working using this description: planet.qgis.org/planet/tag/pycharm. Don't know if it will work today.
    – Jakob
    Commented Feb 28, 2020 at 10:10

1 Answer 1

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I recommend using First Aid Plugin for QGIS (github page). This plugin really helps with plugin testing in QGIS 3+.

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    I have a "Module not found error" when i try to run my script in First Aid. "No module named 'main.imported_classes'; 'main' is not a package"
    – Cupain
    Commented Feb 28, 2020 at 10:04

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