Awesome
promisio
JavaScript-style async programming for Python.
Examples
Create a promise-based async function using the promisify decorator. It works
on both sync and async functions!
from promisio import promisify
@promisify
async def f():
await asyncio.sleep(1)
return 42
@promisify
def g(x):
return x * 2
async def main():
print(await f()) # prints 42
print(await g(42)) # prints 84
promise = f() # runs function in the background without waiting
# ... do other stuff here in parallel with f running
await promise # finally wait for f to complete
The return value of the decorated function is a JavaScript-style promise object
that can be awaited. The then(), catch() and finally_() methods to chain
promises work as in JavaScript. The Promise.all(), Promise.all_settled(),
Promise.any(), Promise.race(), Promise.resolve() and Promise.reject()
are also available. Promises in this package are extended to also support
cancellation via the cancel() and cancelled() methods.