def load(cls: tp.Type[X], filepath: tp.PathLike) -> X:
"""Loads a pickle file and checks that it contains an optimizer.
The optimizer class is not always fully reliable though (e.g.: optimizer families) so the user is responsible for it.
"""
filepath = Path(filepath)
with filepath.open("rb") as f:
opt = pickle.load(f)
assert isinstance(opt, cls), f"You should only load {cls} with this method (found {type(opt)})"
return opt
def import_additional_module(filepath: tp.PathLike) -> None:
"""Imports an additional file at runtime
Parameter
---------
filepath: str or Path
the file to import
"""
filepath = Path(filepath)
spec = importlib.util.spec_from_file_location(
"nevergrad.additionalimport." + filepath.with_suffix("").name,
str(filepath))
module = importlib.util.module_from_spec(spec) # type: ignore
assert spec.loader is not None # type: ignore
spec.loader.exec_module(module) # type: ignore