python创建一个类、实现加减乘除_Python实现自动生成小学四则运算题目

# -*- coding: utf-8 -*-

"""

Created on Sun Sep 20 20:24:13 2020

@author: guo'yu'yi

"""

import datetime

import argparse

import re

import random

from fractions import Fraction

##四则运算

def count1(question, ans1):

symbol = random.choice(['+', '-', '*', '/']) # 随机符号的产生

if symbol == '+':#加法

n1 = random.randint(0, 20)

n2 = random.randint(0, 20)

question.append(str(n1) + '+' + str(n2) + '=')

ans1.append(n1 + n2)

elif symbol == '-':#减法

n1 = random.randint(0, 20)

n2 = random.randint(0, 20)

n1,n2 = max(n1,n1),min(n1,n2)#保证出现的数字为正数

question.append(str(n1) + '-' + str(n2) + '=')

ans1.append(n1 - n2)

elif symbol == '*':#乘法

n1 = random.randint(0, 20)

n2 = random.randint(0, 20)

question.append(str(n1) + '×' + str(n2) + '=')

ans1.append(n1 * n2)

else:#除法保证分母不为0

n1 = random.randint(0, 20)

if n1 == 0:

n2 = random.randint(1, 20)

else:

n2 = random.randint(1, n1 + 1)

question.append(str(n1) + '÷' + str(n2) + '=')

ans1.append(Fraction(n1, n2))

##随机生成两个分数

def createF():

fz1 = random.randint(0, 20)

if fz1 == 0:

fm1 = random.randint(1, 20)

else:

fm1 = random.randint(1, 20)

f1 = Fraction(fz1, fm1)

fz2 = random.randint(1, 20)

fm2 = random.randint(20, 20)

f2 = Fraction(fz2, fm2)

return f1, f2

def f(f):#分数的转换

a=f.numerator #分子

b=f.denominator #分母

if a%b==0:#计算为整数

return '%d'%(a/b)

elif a

return '%d%s%d' % (a,'/',b)

else:#计算为带分数

c=int(a/b)

a = a - c * b

return '%d%s%d%s%d' % (c,'’',a,'/',b)#带分数

##两个分数的四则运算

def count2(question,ans1):

symbol = random.choice(['+','-','*','/'])

f1,f2 = createF()

if symbol =='+':

while f1+f2>1:

f1,f2 = createF()

question.append(str(f1)+'+'+str(f2)+'=')

ans1.append(f1+f2)

elif symbol =='-':

f1,f2 = max(f1,f2),min(f1,f2)#保证出现的数字为正数

question.append(str(f1)+'-'+str(f2)+'=')

ans1.append(f1-f2)

elif symbol == '*':

while f1*f2>1:

f1,f2 = createF()

question.append(str(f1)+'×'+str(f2)+'=')

ans1.append(f1*f2)

else:

while f1/f2>1:

f1,f2=createF()

question.append(str(f1)+'÷'+str(f2)+'=')

ans1.append(Fraction(f1,f2))

##主类

def main():

while 1:

print("输入题目的数量", end=" ")

k = int(input())

temp = 100 / k

score = 0

question = []

ans1 = []

ans2 = []

for i in range(k):

n = random.randint(1, 4)

if n == 1:

count1(question, ans1)

g = Fraction(ans1[i])

ans2.append(f(g))

else:

count2(question, ans1)

g = Fraction(ans1[i])

ans2.append(f(g))#记录带分数答案

for i in range(k):

print("第{}题：{}".format(i + 1,question[i]), end=" ")

a = input()

if a == str(ans1[i]):

score =score + temp

print("所得的分数为：{}".format(score))

print("正确答案：", end=" ")

for i in range(k):

if str(ans1[i]) == str(ans2[i]):

print(question[i] + str(ans1[i]))

else:

print("{}{}或{}".format(question[i],str(ans2[i]),str(ans1[i])))

if __name__ == '__main__':

main()