Circular import when debug trace

[zhengxyz123]

When I run

PYGLET_DEBUG_TRACE=1 python ...

It raises

Traceback (most recent call last):
  File "<frozen runpy>", line 189, in _run_module_as_main
  File "<frozen runpy>", line 148, in _get_module_details
  File "<frozen runpy>", line 112, in _get_module_details
  File "/home/jason/Desktop/mystery/mystery/__init__.py", line 4, in <module>
    from pyglet import version as pyglet_ver
  File "/home/jason/Desktop/mystery/lib/python3.11/site-packages/pyglet/__init__.py", line 307, in <module>
    class _ModuleProxy:
  File "/home/jason/Desktop/mystery/lib/python3.11/site-packages/pyglet/__init__.py", line 307, in _ModuleProxy
    class _ModuleProxy:
    
  File "/home/jason/Desktop/mystery/lib/python3.11/site-packages/pyglet/__init__.py", line 307, in _ModuleProxy
    class _ModuleProxy:
    
  File "/home/jason/Desktop/mystery/lib/python3.11/site-packages/pyglet/__init__.py", line 277, in _trace_func
    _trace_frame(thread, frame, indent)
  File "/home/jason/Desktop/mystery/lib/python3.11/site-packages/pyglet/__init__.py", line 221, in _trace_frame
    from pyglet import lib
  File "/home/jason/Desktop/mystery/lib/python3.11/site-packages/pyglet/lib.py", line 21, in <module>
    script_path = pyglet.resource.get_script_home()
                  ^^^^^^^^^^^^^^^
AttributeError: partially initialized module 'pyglet' has no attribute 'resource' (most likely due to a circular import)

Maybe a circular import happened(in pyglet 2.0.10).

[benmoran56]

Can you try removing that import, and copying the get_script_home function directly into the lib module?

[zhengxyz123]

I have found an easier way by replacing this line

pyglet/pyglet/lib.py

Line 13 in 74970f8

import pyglet

with

13 import pyglet
14 import pyglet.resource

[benmoran56]

If you put pyglet.options['debug_trace'] = True in the top of your program, that does work OK.

Your solution also works, but it lead me to the root issue:
In pyglet.__init__, we are calling the _install_trace() function before we set up the ModuleProxy code. That means the pyglet.resource module doesn't exist yet 😅

I'll try to rearrange those.

[benmoran56]

Can you give it a try with the latest code in master?

[zhengxyz123]

There is no problem when I run

PYGLET_DEBUG_TRACE=1 python3

then import pyglet.

[benmoran56]

Great! Thanks for testing. We can close this I think. It will be in the next release (hopefully soon).