Python实现自动生成小学四则运算题目

 

GitHub仓库地址：https://github.com/cherry43002/python

1、  需求分析：

• 能自动生成小学四则运算题目（注意是给小学生用的，要是结果出现负数的话他们会迷茫的！）
• 除了整数外，还要支持真分数的四则运算

2、  功能设计：

（1）       基础功能：实现四则运算题目的自动生成，并打印出题目的答案

（2）       扩展功能：实现菜单操作

（3）       高级功能：

3、  设计实现：

4、代码说明：

  1 import random
  2 
  3 from fractions import Fraction
  4 
  5 def newint():
  6     opr = ['＋', '－', '×', '÷']
  7     fh = random.randint(0, 3)
  8     n1 = random.randint(1, 20)
  9     n2 = random.randint(1, 20)
 10     rjg = 0
 11     if fh == 0:
 12         rjg = n1 + n2
 13     elif fh == 1:
 14         n1, n2 = max(n1, n2), min(n1, n2)
 15         rjg = n1 - n2
 16     elif fh == 2:
 17         rjg = n1 * n2
 18     elif fh == 3:
 19         n1, n2 = max(n1, n2), min(n1, n2)
 20         while n1 % n2 != 0:
 21             n1 = random.randint(1, 10)
 22             n2 = random.randint(1, 10)
 23             n1, n2 = max(n1, n2), min(n1, n2)
 24         rjg = int(n1 / n2)
 25     print(n1, opr[fh], n2, '= ', end='')
 26     return rjg
 27 
 28 
 29 
 30 def newfra():
 31     opr = ['＋', '－', '×', '÷']
 32     fh = random.randint(0, 3)
 33     t1 = random.randint(1, 10)
 34     t2 = random.randint(t1, 10)
 35     n1 = Fraction(t1, t2)
 36     t1 = random.randint(1, 10)
 37     t2 = random.randint(t1, 10)
 38     n2 = Fraction(t1, t2)
 39     rjg = 0
 40     if fh == 0:
 41         rjg = n1 + n2
 42     elif fh == 1:
 43         n1, n2 = max(n1, n2), min(n1, n2)
 44         rjg = n1 - n2
 45     elif fh == 2:
 46         rjg = n1 * n2
 47     elif fh == 3:
 48         n1, n2 = max(n1, n2), min(n1, n2)
 49         rjg = n1 / n2
 50     print(n1, opr[fh], n2, '= ', end='')
 51     return rjg
 52 
 53 def newtest():
 54     opr = ['＋', '－', '×', '÷']
 55     print('输入题库所需要的题目数量')
 56     n=int(input())
 57     rjg=[]
 58     m=0
 59     while m<=(n-1):
 60         fh = random.randint(0, 4)
 61         if fh==0:
 62             print(m+1,end='、')
 63             rjg.append(newfra())
 64             print(' ')
 65         else:
 66             print(m+1,end='、')
 67             rjg.append(newint())
 68             print(' ')
 69         m=m+1
 70     m=0
 71     print('答案：')
 72     while m<=(n-1):
 73         print(m+1,'、',rjg[m])
 74         m=m+1
 75         
 76         
 77         
 78 print('1、四则运算')
 79 print('2、制作题库')
 80 n=int(input())
 81 if n==1:
 82     print('input "0000" to Quit')
 83     while True:
 84         fh = random.randint(0, 4)
 85         if fh == 0:
 86             rjg = newfra()
 87             jg = input()
 88             if jg == '0000':
 89                 break;
 90             sr = Fraction(jg)
 91             if sr == rjg:
 92                 print('right')
 93             else:
 94                 print('error. the Tight answer is', rjg)
 95         else:
 96             rjg = newint()
 97             jg = input()
 98             if jg == '0000':
 99                 break;
100             sr = int(jg)
101             if sr == rjg:
102                 print('right')
103             else:
104                 print('error. the Tight answer is', rjg)
105 if n==2:
106     newtest()

View Code

 

5、运行测试：

6、PSP

7、小结

 

1、  知识水平有限，对问题理解不够透彻，需提高自身知识素养

 

2、  对Python编程语言不够熟练，今后加强练习

 

3、  对撰写论文还属于初级阶段，今后多写多练

 

 

 

转载于:https://www.cnblogs.com/Alin02/p/10655466.html