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Python deletes unwanted objects (built-in types or class instances) automatically to free the memory space. The process by which Python periodically frees and reclaims blocks of memory that no longer are in use is called Garbage Collection. Handy Solutions

https://towardsdatascience.com/memory-management-and-garbage-collection-in-python-c1cb51d1612c#:~:text=Garbage%20collection%20is%20implemented%20in,cleans%20up%20the%20object%20immediately.