python - How does process join() work? -


i trying understand multiprocessing in python, wrote following program:

from multiprocessing import process  numofloops = 10  #function each process def func():     = float(0.0)     in xrange(0, numofloops):         += 0.5         print   processes = [] numofprocesses = 2 #create processes in xrange(0, numofprocesses):     processes.append(process(target=func))  process in processes:     process.start() #start processes process in processes:     process.join()  #wait each process terminate    print "shouldn't statement printed @ end??"

i created 2 processes executes function func(). used join() method wait each process terminate before proceeding program. doesn't mean last print statement should printed @ end of program after 2 processes have executed function? output was: 

shouldn't statement printed @ end?? 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10

which not expected. can explain what's going on?

it simple, waits each of running processes finish , when happens, returns.

the reason why called join is joining processes single one. enter image description here


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