Some Python Notes | King Weekly
The Global Interpreter Lock (GIL) At its core, the Global Interpreter Lock, or GIL, is a lock that only allows one thread to execute Python bytecode at a time within a single process. This means that even on a multi-core processor, a standard Python program with multiple threads will only utilize a single core for executing Python code. It is also for compatibility with large number extension modules written in C. These C extensions may not have built-in thread safety mechanisms, so GIL provides a safety net to ensure that they are executed in a single-threaded environment. The primary reason for the GIL’s existence lies in Python’s memory management. ...