def load_item_types():
 item_types = {}
 for meta_source in META_SOURCES.values():
  item_types.update(meta_source.item_types)
 return item_types

def load_item_types ( ) : item_types = { } for meta_source in META_SOURCES . values ( ) : item_types . update ( meta_source . item_types ) return item_types
returns a dictionary containing the item_types of all the metasources .