Explain the main processes implemented and used in Python and their features.

In Python, processes can be created and managed using the multiprocessing module. Key features of processes in Python:

• Each process has its own memory space, which helps avoid issues with the Global Interpreter Lock (GIL) common in threads.
• Processes are started independently, increasing stability and security.
• Inter-process communication (IPC) is implemented via queues, pipes, or shared memory.

Example of creating a process:

from multiprocessing import Process

def worker():
    print('Process is running')

if __name__ == '__main__':
    p = Process(target=worker)
    p.start()
    p.join()

Thus, processes in Python are used for parallel execution of code, especially when you need to bypass GIL limitations.