James Mills wrote:
On Wed, Jan 14, 2009 at 11:02 AM, Catherine Moroney
<catherine.m.moro...@jpl.nasa.gov> wrote:
I would like to spawn off multiple instances of a function
and run them simultaneously and then wait until they all complete.
Currently I'm doing this by calling them as sub-processes
executable from the command-line. Is there a way of accomplishing
the same thing without having to make command-line executables
of the function call?
Try using the python standard threading module.
Create multiple instances of Thread with target=your_function
Maintain a list of these new Thread instnaces
Join (wait) on them.
pydoc threading.Thread
cheers
James
What is the proper syntax to use if I wish to return variables
from a function run as a thread?
For example, how do I implement the following code to return
the variable "c" from MyFunc for later use in RunThreads?
Trying to return anything from the threading.Thread call results
in a "unpack non-sequence" error.
import threading, sys
def MyFunc(a, b):
c = a + b
print "c =",c
return c
def RunThreads():
args = (1,2)
threading.Thread(target=MyFunc,args=(1,2)).start()
if __name__ == "__main__":
RunThreads()
sys.exit()
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