Python run a function multiple times in parallel

from multiprocessing import Process
import os
import time
import glob


def task():

    query_files = glob.glob("/home/rasdaman/rasdaman_community/rasdaman/systemtest/testcases_mandatory/test_select/queries/condense_*.rasql")

    for query_file in query_files:
        with open(query_file, 'r') as file:
            query = file.read()


        print "Querying file " + query_file   
        command = "rasql -q '" + query + "' >> /dev/null"
        os.system(command) 

    print "Task is done. \n"
    time.sleep(10)

tasks = []
max_processes = 5

# Run this task with max times
for i in range(0, max_processes):
    tasks.append(task)

all_processes = []

for func in tasks:
    p = Process(target = func)
    all_processes.append(p)
    p.start()

for p in all_processes:
    p.join()

print "All threads finished."