Dear All,
I have a function def printHello(): fp = open('file','w') fp.write('hello') fp.close()
I would like to call that function using spawn or fork. My questions are:
1. Which should I use 2. How do I call that function if it is defined in the same file.
spawn execute an external executable program *outside* your current script, *not* a Python function. So say you want to run wordpad.exe from your Python script, you could do:
os.spawn(os.P_NOWAIT, "C:\\Program files\\Accesories\\wordpad.exe, [...])
So you *need* an external executable to be passed to spawn.
fork works another way: it duplicates the context of your process in another one and continues both processes in parallel. So basically, it doesn't *execute* anything, but just creates a process. You may then call your function is the new process (a.k.a the "child" process):
def printHello(): ... if os.fork() == 0: ## fork returns 0 in the process copy => this is where we call our function printHello() else: ## If fork doesn't return 0, we're in the original => other code ...
However, fork is only available on Unices.
What are you trying to do exactly? If you provide more explanations, we may provide a better help than the simplistic one above.
HTH -- - Eric Brunel <eric (underscore) brunel (at) despammed (dot) com> - PragmaDev : Real Time Software Development Tools - http://www.pragmadev.com -- http://mail.python.org/mailman/listinfo/python-list
