四则运算小题目(Python)

github地址：https://github.com/shiwangqiu/Python里的test.py

题目要求：

1.能自动生成小学四则运算题目

2.除了整数外还支持真分数的四则运算

3.不能出现负数

做题思路：

先把代码分成三个部分：整数运算模块a、真分数运算模块b、随机调用a、b模块，然后在主函数设计输出输入，有在线做题、批发题目功能

 

import random
from fractions import Fraction

#整数运算
def newint():
    opr = ['＋', '－', '×', '÷']
    fh = random.randint(0, 3)
    n1 = random.randint(1, 20)
    n2 = random.randint(1, 20)
    rjg = 0
    if fh == 0:
        rjg = n1 + n2
    elif fh == 1:
        n1, n2 = max(n1, n2), min(n1, n2)
        rjg = n1 - n2
    elif fh == 2:
        rjg = n1 * n2
    elif fh == 3:
        n1, n2 = max(n1, n2), min(n1, n2)
        while n1 % n2 != 0:
            n1 = random.randint(1, 10)
            n2 = random.randint(1, 10)
            n1, n2 = max(n1, n2), min(n1, n2)
        rjg = int(n1 / n2)
    print(n1, opr[fh], n2, '= ', end='')
    return rjg

#真分数运算
def newfra():
    opr = ['＋', '－', '×', '÷']
    fh = random.randint(0, 3)
    t1 = random.randint(1, 10)
    t2 = random.randint(t1, 10)
    n1 = Fraction(t1, t2)
    t1 = random.randint(1, 10)
    t2 = random.randint(t1, 10)
    n2 = Fraction(t1, t2)
    rjg = 0
    if fh == 0:
        rjg = n1 + n2
    elif fh == 1:
        n1, n2 = max(n1, n2), min(n1, n2)
        rjg = n1 - n2
    elif fh == 2:
        rjg = n1 * n2
    elif fh == 3:
        n1, n2 = max(n1, n2), min(n1, n2)
        rjg = n1 / n2
    print(n1, opr[fh], n2, '= ', end='')
    return rjg

def newtest():
    opr = ['＋', '－', '×', '÷']
    print('输入题库所需要的题目数量')
    n=int(input())
    rjg=[]
    m=0
    while m<=(n-1):
        fh = random.randint(0, 4)
        if fh==0:
            print(m+1,end='、')
            rjg.append(newfra())
            print(' ')
        else:
            print(m+1,end='、')
            rjg.append(newint())
            print(' ')
        m=m+1
    m=0
    print('答案：')
    while m<=(n-1):
        print(m+1,'、',rjg[m])
        m=m+1
print('1、四则运算')
print('2、制作题库')
n=int(input())
if n==1:
    print('input "0000" to Quit')
    while True:
        fh = random.randint(0, 4)
        if fh == 0:
            rjg = newfra()
            jg = input()
            if jg == '0000':
                break;
            sr = Fraction(jg)
            if sr == rjg:
                print('right')
            else:
                print('error. the Tight answer is', rjg)
        else:
            rjg = newint()
            jg = input()
            if jg == '0000':
                break;
            sr = int(jg)
            if sr == rjg:
                print('right')
            else:
                print('error. the Tight answer is', rjg)
if n==2:
    newtest()

　

 

测试运行：

 

效能分析：