code: def load_plugins_from_module(module_name):
      
      plugins = {}
  
      try:
          if module_name.endswith('.py'):
              import imp
              mod = imp.load_source('module.name', module_name)
          else:
              mod = importlib.import_module(module_name)
      except Exception as e:
          logger.debug("Import module <{}> failed: {}".format(module_name, e))
          return {}
      for _, cls in inspect.getmembers(mod, inspect.isclass):
          # Don't try to register plugins imported into this module elsewhere
          if issubclass(cls, (Catalog, DataSource)):
              plugins[cls.name] = cls
  
      return plugins
docs: Imports a module and returns dictionary of discovered Intake plugins.
  
      Plugin classes are instantiated and added to the dictionary, keyed by the
      name attribute of the plugin object.