How does the function create_model() find the model we want?

[Calvin-Pang]

Hello, I am reading the timm codes now and want to have a better understanding of this excellent tool.
And I have a question here. Can anyone tell me how does the function create_model() find the model want? For example, I run the code: model = timm.create_model(model_name='timm:resnet34',pretrained = False), and it will go to the resnet.py for the model I want. So how does it find the resnet.py? I only find the code create_fn = model_entrypoint(model_name) in factory.py, but in the function model_entrypoint(model_name), it only tell me :

and the _model_entrypoints is a empty one:

It is strange, can someone tell me how it works?

[rwightman]

https://fastai.github.io/timmdocs/tutorial_feature_extractor

[Calvin-Pang]

Thank you very much for the help!