多进程

from multiprocessing import Process
import time
 
 
class MyProcess(Process):
    def __init__(self, loop):
        Process.__init__(self)
        self.loop = loop
 
    def run(self):
        for count in range(self.loop):
            time.sleep(1)
            print('Pid: ' + str(self.pid) + ' LoopCount: ' + str(count))
 
 
if __name__ == '__main__':
    for i in range(2, 5):
        p = MyProcess(i)
        p.start()