python之線程2（單線程和多線程）

# -*- coding: UTF-8 -*-import threadingfrom time import ctime, sleepclass MyThread(threading.Thread):    def __init__(self, func, args, name=''):        threading.Thread.__init__(self)        self.name = name        self.func = func        self.args = args    def getResult(self):        return self.res    def run(self):        print 'starting', self.name, 'at:', ctime()        self.res = self.func(*self.args)        print self.name, 'finished at:', ctime()

# -*- coding: UTF-8 -*-from myThread import MyThreadfrom time import ctime, sleep#threading模塊的其他函數(shù)#activeCount/active_count(): 當(dāng)前活動(dòng)的Thread對象個(gè)數(shù)#currentThread()/current_thread: 返回當(dāng)前的Thread對象#enumerate(): 放回當(dāng)前活動(dòng)的Thread對象列表#settrace(func),為所有線程設(shè)置一個(gè)trace函數(shù)#setprofile(func), 為所有線程設(shè)置一個(gè)profile函數(shù)#stack_size(size=0), 返回新創(chuàng)建線程的棧大小，或?yàn)楹罄m(xù)創(chuàng)建的線程設(shè)定棧的大小為size#斐波那契
，階乘與累加def fib(x):    sleep(0.005)    if x < 2: return 1    return (fib(x-2) + fib(x-1))def fac(x):    sleep(0.1)    if x < 2: return 1    return (x * fac(x -1))def sum(x):    sleep(0.1)    if x < 2: return  1    return (x + sum(x-1))funcs = [fib, fac, sum]n = 12def main():    nfuncs = range(len(funcs))    print '*** Single Thread'    for i in nfuncs:        print 'starting', funcs[i].__name__, 'at:', ctime()        print funcs[i](n)        print funcs[i].__name__, 'finished at:', ctime()    print ' *** MULTIPLE THREADS'    threads = []    for i in nfuncs:        t = MyThread(funcs[i], (n,), funcs[i].__name__)        threads.append(t)    for i in nfuncs:        threads[i].start()    for i in nfuncs:        threads[i].join()        print threads[i].getResult()    print 'all done'if __name__ == "__main__":    main()#輸出# *** Single Thread# starting fib at: Fri May 13 23:18:47 2022# 233# fib finished at: Fri May 13 23:18:53 2022# starting fac at: Fri May 13 23:18:53 2022# 479001600# fac finished at: Fri May 13 23:18:54 2022# starting sum at: Fri May 13 23:18:54 2022# 78# sum finished at: Fri May 13 23:18:56 2022##  *** MULTIPLE THREADS# starting fib at: Fri May 13 23:18:56 2022# starting fac at: Fri May 13 23:18:56 2022# starting sum at: Fri May 13 23:18:56 2022# facsum  finished at:finished at:  Fri May 13 23:18:57 2022Fri May 13 23:18:57 2022## fib finished at: Fri May 13 23:19:03 2022# 233# 479001600# 78# all done

投稿時(shí)間：2022-05-14  最后更新
：2022-08-24