Bug 478341

Krita 5.2.2 (can't select this version in the bugtracker), Windows 10 64 Bit

This simple script runs fine when pressing the "Run" button.

print("Hello World")

But pressing the "Debug" button instead results in two error dialogs popping up.



Dialog 1

Script error - Krita

An exception occurred while running the script.

TypeError: cannot pickle 'ScripterExtension' object

TypeError
Python 3.10.7: C:\Program Files\Krita (x64)\bin\krita.exe
Sun Dec 10 09:52:45 2023

A problem occurred in a Python script.  Here is the sequence of
function calls leading up to the error, in the order they occurred.

 C:\Program Files\Krita (x64)\share\krita\pykrita\scripter\ui_scripter\actions\debugaction\debugaction.py in debug(self=<scripter.ui_scripter.actions.debugaction.debugaction.DebugAction object>)
   33         if self.scripter.uicontroller.invokeAction('save'):
   34             self.scripter.uicontroller.setActiveWidget(i18n('Debugger'))
   35             self.scripter.debugcontroller.start(self.scripter.documentcontroller.activeDocument)
   36             widget = self.scripter.uicontroller.findTabWidget(i18n('Debugger'))
   37             widget.startDebugger()
self = <scripter.ui_scripter.actions.debugaction.debugaction.DebugAction object>
self.scripter = <scripter.scripter.ScripterExtension object>
self.scripter.debugcontroller = <scripter.debugcontroller.DebugController object>
self.scripter.debugcontroller.start = <bound method DebugController.start of <scripter.debugcontroller.DebugController object>>
self.scripter.documentcontroller = <scripter.documentcontroller.DocumentController object>
self.scripter.documentcontroller.activeDocument = <scripter.document_scripter.document.Document object>

 C:\Program Files\Krita (x64)\share\krita\pykrita\scripter\debugcontroller.py in start(self=<scripter.debugcontroller.DebugController object>, document=<scripter.document_scripter.document.Document object>)
   23         self.setCmd(compile(document.data, document.filePath, "exec"))
   24         self._debugger = debugger.Debugger(self.scripter, self._cmd)
   25         self._debugger.debugprocess.start()
   26         loop = asyncio.get_event_loop()
   27         loop.run_until_complete(self._debugger.start())
self = <scripter.debugcontroller.DebugController object>
self._debugger = <scripter.debugger_scripter.debugger.Debugger object>
self._debugger.debugprocess = <Process name='Process-1' parent=8416 initial>
self._debugger.debugprocess.start = <bound method BaseProcess.start of <Process name='Process-1' parent=8416 initial>>

 C:\Program Files\Krita (x64)\multiprocessing\process.py in start(self=<Process name='Process-1' parent=8416 initial>)


 C:\Program Files\Krita (x64)\multiprocessing\context.py in _Popen(process_obj=<Process name='Process-1' parent=8416 initial>)


 C:\Program Files\Krita (x64)\multiprocessing\context.py in _Popen(process_obj=<Process name='Process-1' parent=8416 initial>)


 C:\Program Files\Krita (x64)\multiprocessing\popen_spawn_win32.py in __init__(self=<multiprocessing.popen_spawn_win32.Popen object>, process_obj=<Process name='Process-1' parent=8416 initial>)


 C:\Program Files\Krita (x64)\multiprocessing\reduction.py in dump(obj=<Process name='Process-1' parent=8416 initial>, file=<_io.BufferedWriter name=3>, protocol=None)

TypeError: cannot pickle 'ScripterExtension' object
    __cause__ = None
    __class__ = <class 'TypeError'>
    __context__ = None
    __delattr__ = <method-wrapper '__delattr__' of TypeError object>
    __dict__ = {}
    __dir__ = <built-in method __dir__ of TypeError object>
    __doc__ = 'Inappropriate argument type.'
    __eq__ = <method-wrapper '__eq__' of TypeError object>
    __format__ = <built-in method __format__ of TypeError object>
    __ge__ = <method-wrapper '__ge__' of TypeError object>
    __getattribute__ = <method-wrapper '__getattribute__' of TypeError object>
    __gt__ = <method-wrapper '__gt__' of TypeError object>
    __hash__ = <method-wrapper '__hash__' of TypeError object>
    __init__ = <method-wrapper '__init__' of TypeError object>
    __init_subclass__ = <built-in method __init_subclass__ of type object>
    __le__ = <method-wrapper '__le__' of TypeError object>
    __lt__ = <method-wrapper '__lt__' of TypeError object>
    __ne__ = <method-wrapper '__ne__' of TypeError object>
    __new__ = <built-in method __new__ of type object>
    __reduce__ = <built-in method __reduce__ of TypeError object>
    __reduce_ex__ = <built-in method __reduce_ex__ of TypeError object>
    __repr__ = <method-wrapper '__repr__' of TypeError object>
    __setattr__ = <method-wrapper '__setattr__' of TypeError object>
    __setstate__ = <built-in method __setstate__ of TypeError object>
    __sizeof__ = <built-in method __sizeof__ of TypeError object>
    __str__ = <method-wrapper '__str__' of TypeError object>
    __subclasshook__ = <built-in method __subclasshook__ of type object>
    __suppress_context__ = False
    __traceback__ = <traceback object>
    args = ("cannot pickle 'ScripterExtension' object",)
    with_traceback = <built-in method with_traceback of TypeError object>

The above is a description of an error in a Python program.  Here is
the original traceback:

Traceback (most recent call last):
  File "C:\Program Files\Krita (x64)\share\krita\pykrita\scripter\ui_scripter\actions\debugaction\debugaction.py", line 35, in debug
    self.scripter.debugcontroller.start(self.scripter.documentcontroller.activeDocument)
  File "C:\Program Files\Krita (x64)\share\krita\pykrita\scripter\debugcontroller.py", line 25, in start
    self._debugger.debugprocess.start()
  File "multiprocessing\process.py", line 121, in start
  File "multiprocessing\context.py", line 224, in _Popen
  File "multiprocessing\context.py", line 336, in _Popen
  File "multiprocessing\popen_spawn_win32.py", line 93, in __init__
  File "multiprocessing\reduction.py", line 60, in dump
TypeError: cannot pickle 'ScripterExtension' object



Dialog 2

---------------------------
Krita
---------------------------
krita: Unknown options: c, multiprocessing-fork.

---------------------------
OK   
---------------------------