cancelled() method of Task class in asyncio

Overview:

For a task to be considered cancelled, the coroutine that is wrapped as the Task should have handled and propagated the asyncio.CancelledError.
The method cancelled() returns whether a Task has been cancelled or not.
The return value is True, if the Task has been cancelled successfully and False otherwise.

Example:

# Example Python program that cancels
# a scheduled/running task in the
# event loop provided by the asyncio
# module
import asyncio
import time

marketOpen = True

# A coroutine defintion of order bot
async def orderBot():
   try:
       global marketOpen
       while(marketOpen):
           print("Making orders...")
           await asyncio.sleep(1)
   except:
       # Handle the exception
       print("Stopping the bot")
       marketOpen = False
       # Propagate the exception
       raise
   finally:
       # Cleanup
       marketOpen = False
       print("Bot stopped")

# Coroutine that creates the Task
async def console():
   bot = asyncio.create_task(orderBot())
   await asyncio.sleep(3)
   bot.cancel()

   try:
   await bot;
   except:
       print("Console has stopped the bot")
   print("Task has been cancelled:%s"%bot.cancelled())

# Create event loop
loop = asyncio.new_event_loop()

# Set the new loop object to asyncio
asyncio.set_event_loop(loop)

# Run the asyncio Task
asyncio.run(console())

Output:

Making orders...

Stopping the bot

Bot stopped

Console has stopped the bot

Task has been cancelled:True

Cancelled() method of Task class in asyncio

Overview:

Example:

Output: