# Author: Sooele
from multiprocessing import Process, Lock #从来multiprocessing导入Process,Lock
def f(l, i):
l.acquire()
try:
print('hello world', i)
finally:
l.release()
if __name__ == '__main__':
lock = Lock() #生成锁的实例
for num in range(10): #启动10个线程
Process(target=f, args=(lock, num)).start()
