`_get_attribute_list` cannot load modules in `name_type_map` listed after it

[svip]

Describe the bug Using https://github.com/Candoran2/nifxml for formats/nif, using this guide, I end up with an addon Blender cannot load:

  File "[...]/generated/formats/nif/__init__.py", line 1, in <module>
    from generated.formats.nif.imports import name_type_map
  File "[...]/generated/formats/nif/imports.py", line 883, in <module>
    class_object.init_attributes()
  File "[...]/generated/base_struct.py", line 263, in init_attributes
    cls._attribute_list = tuple(cls._get_attribute_list())
                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "[...]/generated/formats/nif/nilegacy/niobjects/NiParticleModifier.py", line 29, in _get_attribute_list
    yield 'controller', name_type_map['Ptr'], (0, name_type_map['NiParticleSystemController']), (False, None), (lambda context: context.version >= 50528269, None)
                                                  ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
KeyError: 'NiParticleSystemController'

To Reproduce Steps to reproduce the behavior:

1. Follow the guide listed above.
2. Attempt to install the addon in Blender.

Expected behavior That it would install without problem.

Version Info:

• Python Version: 3.11.4
• Blender Version: 3.5
• Cobra Tools Version: master from today (4 August 2023) (8533e477c98df4afc3a9840018b367bb029cf740)

This bug honestly baffles me, because looking at the Python code, it should be correct:

name_type_map = {}
for type_name, module in type_module_name_map.items():
    name_type_map[type_name] = getattr(import_module(module), type_name)
for class_object in name_type_map.values():
    if callable(getattr(class_object, 'init_attributes', None)):
        class_object.init_attributes()

My formats/nif/imports.py contain this as the bottom (like all other imports.py). name_type_map should already be filled in by the time init_attributes() is called, and yet somehow it appears that it isn't?

I was thinking of posting this issue at https://github.com/Candoran2/nifxml, but that project does not appear to allow issues. But I can see @Candoran2 is involved both places.

[Candoran2]

Which branch of the xml were you using?

[svip]

I'm using develop on nifxml.

[Candoran2]

Hm, odd. You're right that name_type_map should already be filled in by the time init_attributes is called. You could try manually adding a try: except case around the failing piece of code and then see what's in the name_type_map at the time of the exception.

[svip]

Oh dear. I feel kind of guilty for bringing this up, but clearly it was some internal cache in Blender. I cannot believe I did not at least attempt restarting Blender. I will just close this issue. It's just that Blender gives a clear implication that it can unload and reload addons at any time.

[HENDRIX-ZT2]

It's just that Blender gives a clear implication that it can unload and reload addons at any time.

That's very risky. I always restart hehe