Solution Review: Multiple Asynchronous Calls

Solution: Import the asyncio Library and Call the Asynchronous Coroutine

• Import the library import asyncio

• Define the function

  Asynchronous functions are declared with async def.

  import asyncio
  async def sum(n1, n2):
  await asyncio.sleep(1) 
  return  
  

• Call the asynchronous coroutine

  1. Create an event loop

      loop = asyncio.get_event_loop()
     

  2. Run async function and wait for completion

      results = loop.run_until_complete(asyncio.gather(
      sum(n1, n2)
      sum(n1, n2)
      sum(n1, n2))
     
     

  3. Close the loop

      loop.close()
     

The following python code explains the concept.