How to implement interaction between multiple separate processes in a system?

To facilitate interaction between multiple separate processes in Python, inter-process communication (IPC) mechanisms can be used, such as:

• Queues from the multiprocessing module — allow safe data exchange between processes.
• Pipes — a bidirectional channel for data transfer.
• Shared Memory — for joint access to data.
• Sockets — for data exchange over a network or locally.

Example of using a queue:

from multiprocessing import Process, Queue

def worker(q):
    q.put('Data from process')

if __name__ == '__main__':
    q = Queue()
    p = Process(target=worker, args=(q,))
    p.start()
    print(q.get())  # Receive data from another process
    p.join()

Thus, processes can exchange messages and synchronize their work.