When you define a query parameter explicitly with `Query` you can also declare it to receive a list of values, or said in other way, to receive multiple values.

For example, to declare a query parameter `q` that can appear multiple times in the URL, you can write:

=== "Python 3.10+"

    ```Python hl_lines="9"
    {!> ../../../docs_src/query_params_str_validations/tutorial011_an_py310.py!}
    ```

=== "Python 3.9+"