Class LazyModule

tensorboard/lazy.py:63–76

        # load_once() the first time it's needed. The class is nested so we can close
        # over load_once() and avoid polluting the module's attrs with our own state.
        class LazyModule(types.ModuleType):
            def __getattr__(self, attr_name):
                return getattr(load_once(self), attr_name)

            def __dir__(self):
                return dir(load_once(self))

            def __repr__(self):
                if load_once.loaded:
                    return "<%r via LazyModule (loaded)>" % load_once(self)
                return (
                    "<module %r via LazyModule (not yet loaded)>"
                    % self.__name__
                )

        return LazyModule(name)