code: def load_module(self, name):
          
          if name in sys.modules:
              return sys.modules[name]
          # load the actual import hook module
          module_name = self.mount2name(name)
          __import__(module_name)
          # alias the import hook module to the mount, so both can be used interchangeably
          module = sys.modules[name] = sys.modules[module_name]
          module.install()
          return module
docs: Load and return a module