protomotions.utils.hydra_replacement module¶

Simple replacement for hydra.utils functions to avoid the heavy hydra-core dependency. Provides get_class and instantiate functions with compatible APIs.

protomotions.utils.hydra_replacement.get_class(path)[source]¶

Import and return a class from a string path.

Parameters:: path (str) – Fully qualified class path, e.g., “torch.optim.Adam”
Returns:: The class object
Return type:: type

Example

>>> Adam = get_class("torch.optim.Adam")
>>> optimizer = Adam(params, lr=0.001)

protomotions.utils.hydra_replacement.instantiate(config, **kwargs)[source]¶

Instantiate a class from a config object.

Parameters:

config – Config object with _target_ attribute specifying the class path, or a dict with ‘_target_’ key
**kwargs – Additional keyword arguments to pass to the constructor, overriding config values

Returns:

Instance of the specified class

Return type:

Any

Example

>>> class Config:
...     _target_ = "torch.optim.Adam"
...     lr = 0.001
>>> optimizer = instantiate(config, params=model.parameters())