四则运算

import random
def szys():
sym = ['＋', '－', '×', '÷']
f= random.randint(0, 3)
n1 = random.randint(1, 20)
n2 = random.randint(1, 20)
result = 0
if f== 0:#加法
result = n1 + n2
elif f == 1:#减法，要先比较大小，防止输出负数
n1, n2 = max(n1, n2), min(n1, n2)
result = n1 - n2
elif f== 2:#乘法
result = n1 * n2
elif f == 3:#除法，要比较大小，并循环取整除
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)
result = int(n1 / n2)
print(n1, sym[f], n2, '= ', end='')
return result

制作题库

def test():

sym = ['＋', '－', '×', '÷']

print('输入所需要的题目数量')

n=int(input())

result =[]

m=0

while m<=(n-1):

    print(m+1,end='、')

    result .append(szys())

    print(' ')

    m=m+1

m=0

print('对应的答案：')

while m<=(n-1):

    print(m+1,'、',result [m])

    m=m+1

print('选择想要的模式')
print('1、进行四则运算')
print('2、制作题库')
n=int(input())

当输入1时，进行四则运算，调用函数syzs()

if n1:
while True:
result = szys()
j= input()
s= int(j)
if s result :
print('right')
else:
print('error.，the answer is', result )

当输入2时，进行制作题库

if n==2:

 test()

运行截图：