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Joke
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import inspect | |
import asyncio | |
import functools | |
from typing import Callable, TypeVar, Union, NewType, Coroutine, Awaitable, Any | |
__all__ = ["timer", "WaitTime", "Callback", "ReturnType"] | |
T = TypeVar("T") | |
WaitTime = NewType("WaitTime", Union[int, float]) | |
SyncCallback = NewType("SyncCallback", Union[Callable[..., T], functools.partial]) | |
AsyncCallback = NewType("Callback", Union[Awaitable, Coroutine]) | |
Callback = NewType("Callback", Union[SyncCallback, AsyncCallback]) | |
ReturnType = NewType("ReturnType", Union[T, Any]) | |
async def waiter(callback: SyncCallback, wait_time: WaitTime) -> ReturnType: | |
loop = asyncio.get_running_loop() | |
await asyncio.sleep(wait_time) | |
return await loop.run_in_executor(None, callback) | |
async def async_waiter(callback: AsyncCallback, wait_time: WaitTime) -> ReturnType: | |
await asyncio.sleep(wait_time) | |
return await callback | |
async def timer(callback: Callback, wait_time: WaitTime) -> ReturnType: | |
"""Schedule callback to be called | |
after the given wait_time number | |
of seconds (can be either an int or a float). | |
Arguments: | |
callback {Callback} -- Your function. | |
wait_time {WaitTime} -- Time in seconds. | |
Returns: | |
ReturnType -- Result from your function. | |
Example: | |
import asyncio | |
from elite import timer | |
asyncio.run(timer(functools.partial(func, *args), 10)) | |
# schedule async function | |
asyncio.run(timer(async_func(*args), 10)) | |
# or | |
asyncio.run(timer(another_async_func, 10)) | |
""" | |
if inspect.iscoroutinefunction(callback): | |
cb = callback() | |
elif inspect.isawaitable(callback): | |
cb = callback | |
elif inspect.isfunction(callback) or isinstance(callback, functools.partial): | |
return await waiter(callback, wait_time) | |
else: | |
raise ValueError( | |
"callback can only be of type Awaitable, Coroutine, Callable or functools.partial" | |
) | |
return await async_waiter(cb, wait_time) |
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