code: def find_best_match(path, prefixes):
      
      path_parts = path.split('.')
      for p in prefixes:
          if len(p) <= len(path_parts) and p == path_parts[:len(p)]:
              return '.'.join(p), '.'.join(path_parts[len(p):])
      return '', path
docs: Find the Ingredient that shares the longest prefix with path.