Write simple multiplication problems in Python

Implementation code:

#! /usr/bin/python        //处理程序
#filename jiafa.py        //文件名
import sys
 import random
 running = True         //定义running
 while running:         
   a=random.randint(0,15)     //定义a的值为0-15的随机数
  b=random.randint(0,10)     //定义b的值为0-10的随机数
  print a,'*',b       //输出题目
  he=a*b         
   gauess = int(raw_input('Please answer: ')) //定义用户输入值
  if gauess==he:     //判断用户输入输与实际值是否相等
 
    print "right! Continue? Y/N" // 如果相等，输出正确，并询问是否继续
    fd = raw_input("please Enter: ") //获取键盘输入的值
    str1 = 'Y'
     zhi=cmp(fd,str1) 
     if zhi == 0: //判断键盘输入的值是否是Y，如果是就执行退出，如果不是，就重新回到while，并输出新题
      print "this is over"
       sys.exit() 
   elif gauess<he: //如果输入小于实际值，则提示小了
    print "xiao le "
   else:
     print "da le"//如果输入小于实际值，则提示小了

If you test, please pay attention to the format

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