Can you explain the differences between the concepts of temporary and parallel execution of threads?

Time-slicing and parallel thread execution differ in how they allocate CPU resources:

• Time-slicing is when multiple threads share a single CPU, each getting a time quantum. Threads do not run simultaneously but switch very quickly, creating the illusion of parallelism.

• Parallel execution is when multiple threads run truly simultaneously on different cores or processors.

In Python, due to the GIL (Global Interpreter Lock), true parallelism of threads is limited, so multi-processing is often used for parallel tasks.