https://github.com/13025560413/-1

import random

from fractions import Fraction

operation = ['+', '-', '*', '/'] #四则运算的符号

global f

def integer_score():

#rand = operation[random.randint(0,3)]

number = random.randint(1,4) #随机产生的表达式长度

f = ''

for i in range(number):

a = random.randint(1,20) #随机产生的表达式中的数

rand = operation[random.randint(0, 3)] #随机选择一个四则运算中的符号

if rand == '/':

b = random.randint(a, 20) #随机产生的真分数的分母

f += str(a) + rand + str(b) #数与符号相连

rand = operation[random.randint(0, 2)] #随机选择一个四则运算中的符号

f += rand

else:

f += str(a) + rand

#print(a,rand,end='')

b = random.randint(1, 20)

f += str(b) #得到完整的表达式

n = eval(f) #得到表达式的结果

n = Fraction('{}'.format(n)).limit_denominator() #小数转化为分数

if n > 0:

print('题目：')

print(f,'=')

print('请输出答案：')

x = Fraction('{}'.format(eval(input()))).limit_denominator()

if n == x: #输入的数与表达式比较

print(True)

else:

print(False)

print('正确的答案为：',n)

else:

integer_score()

def integer():

# rand = operation[random.randint(0,3)]

number = random.randint(1, 3)

f = ''

for i in range(number):

a = random.randint(1, 10)

rand = operation[random.randint(0, 3)]

f += str(a) + rand

b = random.randint(1, 10)

f += str(b)

n = eval(f)

if isinstance(n, int) and n > 0:

print('题目：')

print(f, '=')

print('请输出答案：')

x = eval(input())

if n == x:

print(True)

else:

print(False)

print('正确的答案为：', n)

else:

integer()

def score():

op = ['+', '-']

number = random.randint(1, 3)

f = ''

for i in range(number):

a = random.randint(1, 10)

b = random.randint(a, 10)

rand = op[random.randint(0, 1)]

f += str(a) + '/'+ str(b)+rand

a = random.randint(1, 10)

b = random.randint(a, 10)

f += str(a) + '/'+ str(b)

n = eval(f)

n = Fraction('{}'.format(n)).limit_denominator()

if n > 0:

print('题目：')

print(f,'=')

print('请输出答案：')

x = Fraction('{}'.format(eval(input()))).limit_denominator()

if n == x:

print(True)

else:

print(False)

print('正确的答案为：',n)

else:

score()

if __name__ == '__main__':

while True:

print('选择你想做的题目：')

print('0(退出)1(分数题目)，2(整数题目),3(综合题目)')

m = int(input())

if m == 1:

score()

elif m == 2:

integer()

elif m == 3:

integer_score()

elif m == 0:

exit()

else:

print('请重新输入你的选择')

#isinstance(1, int)