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Python Concurrency and Parallelism

Python Concurrency and Parallelism - Important Points


21. Which of the following is an example of a common use case for multithreading in Python?

A. Machine learning

B. GUI programming

C. Web scraping

D. Database programming

Discuss Work Space

Answer: option b

Explanation:

One common use case for multithreading in Python is GUI programming, where the main thread handles user input and output while other threads handle background tasks.

22. What is the difference between concurrency and parallelism?

A. Concurrency refers to the ability to execute multiple tasks simultaneously, while parallelism refers to the ability to execute multiple tasks on multiple processors simultaneously.

B. Concurrency refers to the ability to execute multiple tasks on multiple processors simultaneously, while parallelism refers to the ability to execute multiple tasks simultaneously.

C. Concurrency refers to the ability to execute multiple tasks on a single processor simultaneously, while parallelism refers to the ability to execute multiple tasks on multiple processors simultaneously.

D. Concurrency and parallelism are the same thing.

Discuss Work Space

Answer: option a

Explanation:

Concurrency refers to the ability to execute multiple tasks simultaneously, while parallelism refers to the ability to execute multiple tasks on multiple processors simultaneously.

23. What is the Global Interpreter Lock (GIL) in Python?

A. A mechanism that ensures only one thread can execute Python bytecode at a time.

B. A mechanism that allows multiple threads to execute Python bytecode simultaneously.

C. A mechanism that allows multiple processes to execute Python bytecode simultaneously.

D. A mechanism that prevents Python code from being executed on more than one processor at a time.

Discuss Work Space

Answer: option a

Explanation:

The Global Interpreter Lock (GIL) is a mechanism that ensures only one thread can execute Python bytecode at a time, which can limit the effectiveness of multithreading in Python.

24. Which of the following is an example of a concurrency bug in Python?

A. A race condition

B. A deadlock

C. A livelock

D. A memory leak

Discuss Work Space

Answer: option a

Explanation:

A concurrency bug in Python can refer to any number of issues related to race conditions, where multiple threads or processes compete for resources and produce unpredictable results.

25. Which of the following is a tool for detecting and debugging concurrency issues in Python?

A. PyCharm

B. Black

C. Flake8

D. Pyroscope

Discuss Work Space

Answer: option d

Explanation:

Pyroscope is a tool for detecting and debugging concurrency issues in Python. It can provide insights into the performance of concurrent code and help identify and resolve issues such as contention and resource starvation.


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