How Well Do You Understand Concurrent Programming with Python's asyncio?

Gensen Huang

Created 7/2/2024

74.43%

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Sources

https://discuss.codecademy.com/t/faq-concurrent-programming-in-python-the-asyncio-module/642447

https://docs.python.org/3/library/asyncio-dev.html

https://realpython.com/python-concurrency/

Think you can master concurrency in Python? Test your knowledge of asyncio and see how many of the 15 questions you can get right!

1. What is the primary purpose of the asyncio module in Python?

To simplify synchronous programming

To support threading more effectively

To provide tools for writing concurrent code using coroutines

To enhance multiprocessing capabilities

2. Which keyword is used to define an asynchronous function in Python?

await

async

a_func

asyncio

3. What does the 'await' keyword do in an async function?

Calls a synchronous function

Transforms the function to run as a thread

Pauses the execution of the async function until the awaited coroutine completes

Creates a new event loop

4. What type of tasks is asyncio particularly well-suited for?

CPU-bound tasks

GPU-bound tasks

I/O-bound tasks

Memory-bound tasks

5. Which function is used to run the main entry point of an asyncio program?

asyncio.start()

asyncio.begin()

asyncio.run()

asyncio.execute()

6. What is an event loop in the context of asyncio?

A mechanism to handle threads and processes

A loop that schedules and handles asynchronous tasks and I/O operations

A construct for creating coroutines

A framework for implementing multi-threading

7. How do you create an asyncio-compatible TCP server?

asyncio.create_tcp_server()

asyncio.run_server()

asyncio.start_server()

asyncio.start_tcp_listener()

8. What does the 'asyncio.gather()' function do?

Collects data from various sources asynchronously

Runs multiple coroutine objects concurrently and waits until they are completed

Starts multiple event loops

Merges multiple event loops into one

9. What function allows the asynchronous call to sleep for a specified time?

asyncio.hold()

asyncio.timeout()

asyncio.sleep()

asyncio.wait()

10. Which of the following is true about coroutines and threads?

Coroutines and threads operate completely independently

Coroutines and threads both use cooperative multitasking

Coroutines run cooperatively while threads can run preemptively

Threads always outperform coroutines

11. What is the primary characteristic of asyncio event loops?

They run on multiple threads

They run on multiple processes

They handle asynchronous tasks within a single thread

They create multiple event loops for different I/O operations

12. Which Python version introduced the async/await syntax?

Python 3.3

Python 3.4

Python 3.5

Python 3.6

13. What happens if an awaitable object in asyncio does not complete?

The async function will return an error

The async function will continue executing other statements

The async function will remain suspended

The async function will convert the awaitable into a thread

14. What is a Future in the context of asyncio?

A past state of an event loop

A synchronous callback

An awaitable object representing a pending result

A coroutine

15. Which statement best describes a 'Task' in asyncio?

A Task is a type of process

A Task is a method for creating threads

A Task wraps a coroutine and schedules its execution

A Task controls memory management

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