继承Process类,另一种方法计算累加和以及阶乘

#定义一个类 继承Process类
from multiprocessing import Process
import os
import time
class jiecheng(Process):
    def __init__(self,num):
        Process.__init__(self)
        self.num = num
    #一算一个数的阶乘
    def run(self):
        j = 1
        for i in range(1,self.num+1):
            j = j * i
        print('%s的阶乘为:%s'%(self.num,j))
class sumToN(Process):
    def __init__(self,num):
        Process.__init__(self)
        self.num = num
    #计算一个数的累加和
    def run(self):
        j = 0
        for i in range(1,self.num+1):
            j = j + i
        print('%s的叠加求和为:%s'%(self.num,j))

if __name__ == "__main__":

    while True:
        num = input('Enter number:')
        num = int(num)
        p = jiecheng(num)
        #这里调用了run
        p.start()

        p = sumToN(num)
        p.start()