I have a function
async def hello(a): await asyncio.sleep(2) print(a) I want to call this function for several elements in a list asynchronously
list = ['words','I','need','to','print','parallely'] Something like this, but the below code runs one after the other.
for word in list: await hello(word) Is there a better way to do this? I had used asyncio.create_task but not sure how to use them in loops.
This is an example of how it should work:
import asyncio list_1 = 'hi i am cool'.split() async def hello(a): await asyncio.sleep(2) print(a) async def run_tasks(): tasks = [hello(word) for word in list_1] await asyncio.wait(tasks) def main(): loop = asyncio.new_event_loop() asyncio.set_event_loop(loop) loop.run_until_complete(run_tasks()) loop.close() main() Sample output:
am i cool hi The above code is mainly for demonstration but the new and easier way to do so is:
def main2(): asyncio.run(run_tasks()) main2() Sample output:
i hi cool am Note:
As suggested in the comments, to preserve the order of inputs, define run_tasks as:
async def run_tasks(): tasks = [hello(word) for word in list_1] await asyncio.gather(*tasks) 
asyncio.gather(*tasks).
listas a variable name, it shadows built-in typelist.