hardDSA

What is the Global Interpreter Lock (GIL)?

Q: What is the Global Interpreter Lock (GIL)?

The **GIL** is a mutex in CPython that allows only one thread to execute Python bytecode at a time. So threads don't give true parallelism for CPU-bound work — use **multiprocessing** for that. Threads still help **I/O-bound** tasks, where the GIL is released during blocking calls.

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Explain the GIL and its impact.

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The GIL is a mutex in CPython that allows only one thread to execute Python bytecode at a time. So threads don't give true parallelism for CPU-bound work — use multiprocessing for that. Threads still help I/O-bound tasks, where the GIL is released during blocking calls.

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PYCPU-bound: threads don't beat sequential (the GIL)

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