This python utility package helps to create lazy modules. A lazy module defers
loading (some of) its attributes until these attributes are first accessed. The
module's lazy attributes in turn are attributes of other modules. These other
modules will be imported/loaded only when (and if) associated attributes are
used. A lazy import strategy can drastically reduce runtime and memory
consumption.

Additionally, this package provides a utility for optional imports with which
one can import a module globally while triggering associated import errors only
at use-sites (when and if a dependency is actually required, for example in the
context of a specific functionality).