import random
number=int(input("输入你想要做的题数："))
answer=[]
guess=[]
for i in range(number) :
    opcode=["+","-","*","*"]
    fuhao1=random.choice(opcode)
    fuhao2=random.choice(opcode)
    x=random.randint(10,1000)
    y=random.randint(10,100)
    z=random.randint(10,100)
    yunsuanshi=(f'{x}{fuhao1}{y}{fuhao2}{z}')
    print(f'{yunsuanshi} =')
    answer.append(f'{yunsuanshi} == {eval(yunsuanshi)}''' )
    guess=int(input("输入你做出的答案："))
    if guess == eval(yunsuanshi) :
        print("正确")
    else :
        print("错误")
print(answer)

#open('text.txt','w+')
file_name='text.txt'
with open(file_name,'r+') as f1 :
    f1.write(str(answer))
print("输入成功")