code: def path(self, key):
      '''Returns the `path` for given `key`'''
      return os.path.join(self.root_path, self.relative_path(key)f path(self, key):
      '''Returns the `path` for given `key`'''
      return os.path.join(self.root_path, self.relative_path(key))
docs: Returns the `path` for given `key`