Python has historically been limited by the Global Interpreter Lock (GIL), which restricted true multi-threading capabilities. The GIL acted as a mutex to protect objects and ensure thread safety but hindered performance by allowing only one thread to execute on one CPU at a time. However, recent developments have seen the Python team accepting a proposal to remove the GIL, making it an optional mode for developers. This significant change was spearheaded by software engineer Sam Gross from Meta, taking over four years to complete. The removal of the GIL opens up new possibilities for Python's concurrency and efficiency, receiving praise from industry experts like Yann LeCun. CPython core developer Thomas Wouters further elaborates on the implications of a GIL-free Python in enhancing multi-threading capabilities.
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by Dylan Cooper at python.plainenglish.io 03-12-2024
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