What Is the Python Global Interpreter Lock (GIL)?
Mar 6, 2018 · Python's 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 at any one time. In this article you'll learn …
Thread states and the global interpreter lock - Python
2 days ago · Thread states and the global interpreter lock ¶ Unless on a free-threaded build of CPython, the Python interpreter is generally not thread-safe. In order to support multi-threaded Python …
What is the Python Global Interpreter Lock (GIL)
Jun 9, 2026 · Global Interpreter Lock (GIL) is a mutex (mutual-exclusion lock) used in the CPython interpreter (the default and most widely used Python implementation). It ensures that only one thread …
Python support for free threading — Python 3.14.6 documentation
1 day ago · Python support for free threading ¶ Starting with the 3.13 release, CPython has support for a build of Python called free threading where the global interpreter lock (GIL) is disabled. Free …
Python 3.14 Just Removed the GIL — Here’s What It Means ... - Medium
Oct 15, 2025 · The Global Interpreter Lock (GIL) is a mechanism inside Python that ensures only one thread executes Python code at a time, even if your CPU has many cores. That means — no matter …
Global interpreter lock - Wikipedia
A global interpreter lock (GIL) is a mechanism used in computer-language interpreters to synchronize the execution of threads so that only one native thread (per process) can execute basic operations …
Python 3.14 and the End of the GIL - Towards Data Science
Oct 18, 2025 · In this article, we discuss a potentially groundbreaking feature of the latest Python 3.14 release: the introduction of an optional “free-threaded” version, which removes the Global Interpreter …
python - What is the global interpreter lock (GIL) in CPython? - Stack ...
Aug 18, 2009 · In CPython, the global interpreter lock, or GIL, is a mutex that prevents multiple native threads from executing Python bytecodes at once. This lock is necessary mainly because CPython's …
Faster Python: Unlocking the Python Global Interpreter Lock
Jul 29, 2025 · Take a first look at true multithreading in Python 3.13 with the no-GIL option. Learn why it matters and compare performance with and without the GIL (Global Interpreter Lock).
How Python's GIL actually works (and when it bites you)
May 10, 2026 · The GIL is released when Python is doing blocking I/O or, more precisely, when the C code implementing that I/O explicitly releases it. Reading a file, waiting on a network request, …
What is the Global Interpreter Lock (GIL) in Python? Is It ... - Medium
Feb 10, 2026 · Learn what Python's Global Interpreter Lock (GIL) is, why it slows multi-threaded code, and whether it's being removed in 2026. A student-friendly guide.