Python's usage exploded even when it was merely new; lacking lots of features. One main reason for this was its great integration with C libraries. Combine this with the possibility of using Threads and you will get your holy grail: and easy language with threads which can use C libraries! BUT! But python needed a Global Interpreter Lock to be able to run C Libraries in its threads.
In this video we will have a closer look at this concept. I will describe the necessity of GIL in Cpython and will show you why and how it is slowing down multi-threaded CPU hungry program. We will check the source code and will understand why both parties (defending and protesting the GIL removal) are claiming that the "You are slowing down Python!"
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