python-asyncio TypeError: object dict can't be used in 'await' expression
I am using a third party module to retrieve data from an API. I simply would like to asynchronously await the module to return the data which occasionally takes several seconds and freezes up my app. However, when I try to await a call to that module I receive the TypeError:
TypeError: object dict can't be used in 'await' expression
import thirdPartyAPIwrapper
async def getData():
retrienveData = await thirdPartyAPIWrapper.data()
return await retrieveData
def main():
loop = asncio.get_event_loop()
data = loop.run_until_complete(getData())
loop.close
return data
Why can I not await a type('dict')? Is there a way around this?
If async/await with asyncio will not work with a third party module that doesn't return a coroutine then what are my other options?Only asynchronous (defined with async def) functions can be awaited. Whole idea is that such functions are written special way what makes possible to run (await) them without blocking event loop. If you want to get result from common (defined with def) function that takes some considerable time to be executed you have these options: rewrite this whole function to be asynchronous call this function in another thread and await for result asynchronously call this function in another process and await for result asynchronously Usually you want to choose second option. Here's example of how to do it: import asyncio import time from concurrent.futures import ThreadPoolExecutor _executor = ThreadPoolExecutor(1) def sync_blocking(): time.sleep(2) async def hello_world(): # run blocking function in another thread, # and wait for it's result: await loop.run_in_executor(_executor, sync_blocking) loop = asyncio.get_event_loop() loop.run_until_complete(hello_world()) loop.close() Please, read this answer about how asyncio works. I think it'll help you much.
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