time_begin = time.time() count=1 number=0 while count<=5000000: # 当count小于100时,不断循环 number+=count # number+count,刚开始0+1=1 。。。 count+=1 # count自加,直到count大于100 print(number) time_end = time.time() time = time_end – time_begin print(‘time:’, time)...