Real Python: Quiz: What Is the Python Global Interpreter Lock (GIL)?

In this quiz, you’ll test your understanding of the Python Global Interpreter Lock (GIL). The GIL allows only one thread to hold the control of the Python interpreter. This has advantages, but can also be a performance bottleneck in CPU-bound and multi-threaded code. By working through this quiz, you’ll revisit the impact of the GIL on the performance of your Python programs and how to mitigate it.