In Python, to fork a process, all you have to do is import the os module and invoke the fork() function. The following example creates a simple parent/child process forking program:

1. Import the os module, necessary to access fork():

        import os

2. Define the child process:

        def child():
            print("Child {} calling".format(os.getpid()))
            os._exit(0)

3. Create the parent process:

        def parent():
            for i in range(10):
                newchild = os.fork()
                if newchild == 0:
                    child()
                else:
                    print("Parent {parent} calling. Creating child {child}".format(parent=os.getpid(), child=newchild))
            i += 1