Motivations:

• Sometimes modules are getting imported several times through lazy import
• Not easy to manage dependencies from file to file

This is how we are managing dependencies now

# current state of lazy import 
def lazy_umap_import_has_dependancy():
    try:
        import warnings

        warnings.filterwarnings("ignore")
        import umap  # noqa

        return True, "ok", umap
    except ModuleNotFoundError as e:
        return False, e, None

After dependency manager it will look like

deps = DepManager()
cuml, has_cuml = deps.cuml
umap, has_umap = deps.umap

Aim

• provides readability, smart dependency management
• easy to write unit tests,
• it will only import the packages once

working example