如何在python中从变量中提取符号？

我希望代码从数组中选择一个随机符号，然后用它执行一个表达式

这是我的密码：

import random

num1=random.randint(0,10)
print(num1)
num2=random.randint(0,10)
print(num2)
symbol=['+', '-', '*']
symboltype=random.choice(symbol)

answerright=num1,symboltype, num2
print(answerright)

---

你可以试着用字典。但我使用了

if

循环，如下所示

import random

num1=random.randint(0,10)
print(num1)
num2=random.randint(0,10)
print(num2)
symbol=['+', '-', '*']
symboltype=random.choice(symbol)

if symboltype == '+':
    answerright=num1 + num2
    print answerright
elif symboltype == "-":
    answerright=num1 - num2
    print answerright
elif symboltype == "*":
    answerright = num1 * num2
    print answerright

---

你的问题是？那么，你想让脚本也做数学运算吗？

{“+”：operator.add，“-”：operator.sub，…}

import random

num1=random.randint(0,10)
print(num1)
num2=random.randint(0,10)
print(num2)
symbol=['+', '-', '*']
symboltype=random.choice(symbol)

if symboltype == '+':
    answerright=num1 + num2
    print answerright
elif symboltype == "-":
    answerright=num1 - num2
    print answerright
elif symboltype == "*":
    answerright = num1 * num2
    print answerright