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Python Concurrency and Parallelism

Python Concurrency and Parallelism - Important Points


36. What is the GIL in Python?

A. A global interpreter lock that ensures only one thread can execute Python bytecode at a time.

B. A threading mechanism that allows Python to execute multiple threads in parallel.

C. A module for managing concurrent I/O in Python.

D. A library for creating and managing parallel processes in Python.

Discuss Work Space

Answer: option a

Explanation:

The GIL, or global interpreter lock, in Python is a mechanism that ensures only one thread can execute Python bytecode at a time. This can limit the performance of multithreaded Python code.

37. Which of the following is a way to overcome the limitations of the GIL in Python?

A. Using multiprocessing instead of threading

B. Using asyncio instead of threading

C. Using coroutines instead of threads

D. Using locks to manage access to shared resources

Discuss Work Space

Answer: option a

Explanation:

One way to overcome the limitations of the GIL in Python is to use the multiprocessing module instead of the threading module, as multiprocessing allows multiple Python interpreters to run in parallel.

38. What is the purpose of the Queue class in Python threading?

A. To provide a way to communicate between threads.

B. To prevent race conditions in multithreaded code.

C. To ensure only one thread can access a shared resource at a time.

D. To provide a way to limit the number of threads that can access a resource at a time.

Discuss Work Space

Answer: option a

Explanation:

The Queue class in Python threading is used to provide a way for threads to communicate with each other, allowing for safe and efficient sharing of data between threads.

39. Which of the following is an example of a parallel processing framework in Python?

A. Dask

B. Flask

C. Django

D. Pyramid

Discuss Work Space

Answer: option a

Explanation:

Dask is an example of a parallel processing framework in Python, as it allows for the efficient execution of parallel and distributed computing tasks.

40. What is the purpose of the concurrent module in Python?

A. To provide a way to execute code concurrently using coroutines.

B. To provide a way to execute code concurrently using threads and processes.

C. To provide a way to manage and control concurrency in Python code.

D. To provide a way to create and manage threads and processes.

Discuss Work Space

Answer: option b

Explanation:

The concurrent module in Python provides a way to execute code concurrently using threads and processes, making it easier to write concurrent and parallel code.


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