How Well Do You Know Python's Asyncio Library?
Gensen Huang
Created 6/26/2024
Test your knowledge of Python's Asyncio library with this challenging quiz! See how many correct answers you can get out of 20.
1. What is the primary purpose of the asyncio library in Python?
Perform blocking I/O operations
Enable asynchronous I/O operations
Facilitate multiprocessing tasks
Simplify threading operations
2. Which function do you use to run a coroutine in Python's asyncio?
asyncio.run()
asyncio.start()
asyncio.execute()
asyncio.begin()
3. Which method do you call to release a Lock in asyncio?
unlock()
release()
free()
leave()
4. What does the await keyword do in an asyncio coroutine?
Starts a new event loop
Pauses coroutine execution until the awaited task is completed
Cancels a running task
Immediately completes the coroutine
5. In which scenario would using the asyncio.Queue class be appropriate?
For high-performance mathematical computations
For file I/O operations
For managing a queue of tasks in asynchronous code
For establishing database connections
6. Which class in asyncio is used to handle asynchronous subprocesses?
asyncio.Exprocess
asyncio.Subprocess
asyncio.Process
asyncio.ProcessManager
7. How do you create a Task object in asyncio?
asyncio.call(coro)
asyncio.run(coro)
asyncio.begin(coro)
asyncio.create_task(coro)
8. Which asyncio function allows scheduling a coroutine to an event loop from another OS thread?
asyncio.to_thread()
asyncio.run_coroutine_threadsafe()
asyncio.run_in_executor()
asyncio.create_threaded_task()
9. What is the purpose of the asyncio.Event class?
To lock critical sections
To set timeouts for tasks
To notify multiple asyncio tasks that an event has occurred
To establish network connections
10. Which function allows imposing a timeout on asyncio operations?
asyncio.wait()
asyncio.timeout()
asyncio.wait_for()
asyncio.limit_time()
11. Which high-level function is recommended to run an asyncio program?
asyncio.init()
asyncio.main()
asyncio.loop()
asyncio.run()
12. How do you check if an asyncio.Lock is currently locked?
locked()
is_locked()
check_locked()
get_lock_status()
13. What is the purpose of the asyncio.sleep() function?
To pause execution for a given number of seconds
To stop a running event loop
To terminate a coroutine
To create a new task
14. What does asyncio.ensure_future() do?
Ensures a future result is available immediately
Wraps and schedules a coroutine into a future
Cancels a running task
Executes a coroutine in a separate process
15. Where are asyncio synchronization primitives implemented?
Lib/asyncio/sync.py
Lib/asyncio/locks.py
Lib/asyncio/prim.py
Lib/asyncio/sync_primitives.py
16. Which method of asyncio.Queue blocks until an item is removed?
delete()
take()
get()
remove()
17. Which of the following is NOT an asyncio synchronization primitive?
18. How do you obtain the currently running event loop?
asyncio.current_loop()
asyncio.get_event_loop()
asyncio.get_running_loop()
asyncio.current_event_loop()
19. What does the asyncio.wait() function do?
Runs a coroutine in a separate thread
Waits for a list of futures or coroutines to complete
Stops the event loop
Sets an event to true
20. Which module contains the implementation of asyncio futures?
Lib/asyncio/futures.py
Lib/asyncio/asyncio.py
Lib/asyncio/loop.py
Lib/asyncio/future.py
