Function create_proxy

core/src/stdlib/pyscript/ffi.py:48–71

Create a persistent JavaScript proxy of a Python function. This proxy allows JavaScript code to call the Python function seamlessly, maintaining the correct context and argument handling. This is especially useful when passing Python functions as callbacks to JavaScript APIs (

(func)

def create_proxy(func):
    """
    Create a persistent JavaScript proxy of a Python function.

    This proxy allows JavaScript code to call the Python function
    seamlessly, maintaining the correct context and argument handling.

    This is especially useful when passing Python functions as callbacks
    to JavaScript APIs (without `create_proxy`, the function would be
    garbage collected after the declaration of the callback).

    ```python
    from pyscript import ffi
    from pyscript import document

    my_button = document.getElementById("my-button")

    def py_callback(x):
        print(f"Callback called with {x}")

    my_button.addEventListener("click", ffi.create_proxy(py_callback))
    ```
    """
    return _cp(func)


def to_js(value, **kw):