Python 这个代码有错误吗？如果有，请告诉我？

我找不到确切的输出，我是初学者，请引导我

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您需要使函数返回以下值：

a = int(input("Enter Your First Number="))
b = int(input("\nEnter Your Second Number="))

def cal():
    sum = a + b
    sub = a - b
    mul = a * b
    div = a % b

cal()    
print("\nAddtion of Two Number is =" , sum)
print("\nSubtraction of Two Number is =" , sub )
print("\nMultiplication of Two Number is =" , mul  )
print("\nDivision of Two Number is =" , div  )

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必须返回值才能在函数外部使用它们

a = int(input("Enter Your First Number="))
b = int(input("\nEnter Your Second Number="))

def cal():
    sum = a + b
    sub = a - b
    mul = a * b
    div = a % b
    return sum, sub, mul, div

sum, sub, mul, div = cal()    
print("\nAddtion of Two Number is =" , sum)
print("\nSubtraction of Two Number is =" , sub )
print("\nMultiplication of Two Number is =" , mul  )
print("\nDivision of Two Number is =" , div  )

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您不能访问函数之外的函数变量。将打印语句放置在函数中，如下面提到的函数中的返回值。< /P >错误1：此代码是Python，但您添加java和C++标签，没有理由错误2：您正在尝试访问函数之外的函数局部变量，在那里不再有SCANEDWONBORD被遗忘…可能需要编辑该标题，并提供有关实际存在的问题/错误的更多详细信息

cal=lambda:（a+b，a-b，a*b，a%b）

然后

sum，sub，mul，div=cal（）。
a = int(input("Enter Your First Number="))
b = int(input("\nEnter Your Second Number="))

def cal():
    return a + b, a - b, a * b, a % b

add,sub,mul,div = cal()    
print("\nAddtion of Two Number is =" , add)
print("\nSubtraction of Two Number is =" , sub )
print("\nMultiplication of Two Number is =" , mul  )
print("\nDivision of Two Number is =" , div  )