code: def _load_plugins():
      
      group = 'keyring.backends'
      entry_points = entrypoints.get_group_all(group=group)
      for ep in entry_points:
          try:
              log.info('Loading %s', ep.name)
              init_func = ep.load()
              if callable(init_func):
                  init_func()
          except Exception:
              log.exception("Error initializing plugin %s." % ep)
docs: Locate all setuptools entry points by the name 'keyring backends'
      and initialize them.
      Any third-party library may register an entry point by adding the
      following to their setup.py::
  
          entry_points = {
              'keyring.backends': [
                  'plugin_name = mylib.mymodule:initialize_func',
              ],
          },
  
      `plugin_name` can be anything, and is only used to display the name
      of the plugin at initialization time.
  
      `initialize_func` is optional, but will be invoked if callable.