Python's Global Interpreter Lock (GIL): Concurrency, Threading, & Multitasking

Published: 24 October 2024
on channel: Real Python

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This is a preview of the video course, "Understanding Python's Global Interpreter Lock (GIL)." The Python Global Interpreter Lock or GIL, in simple words, is a mutex (or a lock) that allows only one thread to hold the control of the Python interpreter.

This means that only one thread can be in a state of execution at any point in time. The impact of the GIL isn’t visible to developers who execute single-threaded programs, but it can be a performance bottleneck in CPU-bound and multi-threaded code.

Since the GIL allows only one thread to execute at a time even in a multi-threaded architecture with more than one CPU core, the GIL has gained a reputation as an “infamous” feature of Python.

This is a portion of the complete course, which you can find here:
https://realpython.com/courses/unders...

The rest of the course covers:
Solving Race Conditions
Understanding the GIL
Changing Interpreters
Removing the GIL

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