returnn.frontend.build_from_dict

Construct modules (or other objects) from dictionaries.

returnn.frontend.build_from_dict.build_from_dict(d: Dict[str, Any], *args, **kwargs) → Module | Any[source]

Build a module (or other object) from a dictionary. “class” in the dict is required and specifies the class to be instantiated. The other options are passed to the class constructor.

Parameters:

  • d – dictionary with the class name and other options

  • args – passed to the class constructor

  • kwargs – passed to the class constructor

Returns:

cls(*args, **d, **kwargs) (after “class” was popped from d)

returnn.frontend.build_from_dict.build_dict(cls: Type | LambdaType | BuiltinMethodType | Callable[[...], Any], **kwargs) → Dict[str, Any][source]

Build a dictionary for build_from_dict(). The class name is stored in the “class” key.

Note that this is intended to be used for serialization and also to get a unique stable hashable representation (e.g. for Sisyphus sis_hash_helper()) which should not change if the class is renamed or moved to keep the hash stable.

Parameters:

  • cls –

    class or function. actually we do not expect any other Callable here. It’s just Callable in the type hint because MyPy/PyCharm don’t correctly support FunctionType

  • kwargs – other kwargs put into the dict. expect to contain only other serializable values.

Returns:

build dict. can easily be serialized. to be used with build_from_dict().