Method map

tinydb/queries.py:500–514

Add a function to the query path. Similar to __getattr__ but for arbitrary functions.

(self, fn: Callable[[Any], Any])

        )

    def map(self, fn: Callable[[Any], Any]) -> 'Query':
        """
        Add a function to the query path. Similar to __getattr__ but for
        arbitrary functions.
        """
        query = type(self)()

        # Now we add the callable to the query path ...
        query._path = self._path + (fn,)

        # ... and kill the hash - callable objects can be mutable, so it's
        # harmful to cache their results.
        query._hash = None

        return query

def where(key: str) -> Query:
    """