def services():
     services = [method1(),
            method2(),
            method3(),
            mrthod4(),
            method5()]
     return services

def runAll():
    import subprocess
    for i in services():
        proc = subprocess.call(i,shell=True)

from joblib import Parallel, delayed

functions = [fn1, fn2, fn3, fn4]

results = Parallel(n_jobs=4)(delayed(f)() for f in functions)

subprocess.call("./foo1&", shell=True)
 subprocess.call("./foo2&", shell=True)

from multiprocessing import Process

def f1():
    while True:
        print 'foo'

def f2():
    while True:
        print 'bar'

def f3():
    while True:
        print 'baz'

if __name__ == '__main__':
    for func in (f1, f2, f3):
        Process(target=func).start()

from multiprocessing import Pool
def parallelfuncs(funcs, args, results, bad_value = None):
    p = Pool()
    waiters = []
    for f in funcs:
        waiters.append(p.apply_async(f, args, callback = results.append))
    p.close()
    for w in waiters:
        if w.get()[0] == bad_value:
            p.terminate()
    return p

results = []
parallelfuncs(services, args, results).join()
print results