def call_later( # type: ignore[override]
self,
delay: float,
callback: Callable[..., Any],
*args: Any,
context: contextvars.Context | None = None,
) -> asyncio.Handle:
"""Arrange for a callback to be called at a given time.
Return a Handle: an opaque object with a cancel() method that
can be used to cancel the call.
The delay can be an int or float, expressed in seconds. It is
always relative to the current time.
Each callback will be called exactly once. If two callbacks
are scheduled for exactly the same time, it undefined which
will be called first.
Any positional arguments after the callback will be passed to
the callback when it is called.
This uses `setTimeout(callback, delay)`
"""
if delay < 0:
raise ValueError("Can't schedule in the past")
h = asyncio.Handle(callback, args, self, context=context)
def run_handle():
if h.cancelled():
return
h._run()
setTimeout(create_once_callable(run_handle), delay * 1000)
return h
def call_later(
self,
delay: float,
callback: Callable,
*args,
context: contextvars.Context = None
):
"""Arrange for a callback to be called at a given time.
Return a Handle: an opaque object with a cancel() method that
can be used to cancel the call.
The delay can be an int or float, expressed in seconds. It is
always relative to the current time.
Each callback will be called exactly once. If two callbacks
are scheduled for exactly the same time, it undefined which
will be called first.
Any positional arguments after the callback will be passed to
the callback when it is called.
This uses `setTimeout(callback, delay)`
"""
from js import setTimeout
if delay < 0:
raise ValueError("Can't schedule in the past")
h = asyncio.Handle(callback, args, self, context=context)
setTimeout(h._run, delay * 1000)
return h
def test_import_invocation():
import js
def temp():
print("okay?")
js.setTimeout(temp, 100)
js.fetch("packages.json")
def test_import_invocation():
import js
def temp():
print("okay?")
from pyodide import create_once_callable
js.setTimeout(create_once_callable(temp), 100)
js.fetch("packages.json")
def set_timeout(callback: Callable[[], None], timeout: int) -> int | JsProxy:
"""Wrapper for JavaScript's setTimeout() which automatically manages the lifetime
of a JsProxy corresponding to the callback param.
"""
id = -1
def wrapper():
nonlocal id
callback()
TIMEOUTS.pop(id, None)
callable = create_once_callable(wrapper)
timeout_retval: int | JsProxy = setTimeout(callable, timeout)
id = timeout_retval if isinstance(timeout_retval, int) else timeout_retval.js_id
TIMEOUTS[id] = callable
return timeout_retval