CODEWITHSUNDEEP
pythonclassinheritance
Jionny
Jionny

Reputation: 17

How can I sum up the values of two functions?

I have two classes. In class B I want to change the values of the variables in class A, which are defined in functions: some and anyt, with the help of the functions in class B: frog and lion. For example, I multiply by 2 or 3..

I get the Error:

 File "E:/Python/Akustik/Akustik/Test.py", line 20
    A.some(a,b,c)  = A.some(a,b,c)* 2
    ^
SyntaxError: can't assign to function call

I know what does that mean, but i can't dispense with the functions in class A and B, does anybody have a tip?

here is the code:

class A:

    def some(self,a, b, c):

        self.a = 4
        self.b = 2
        self.c = 3

    def anyt(self, p, g, f):

        self.p = 5
        self.g = 8
        self.f = 1


class B(A):

    def frog(self):

        A.some(a,b,c)  = A.some(a,b,c)* 2


    def lion(self):

        A.anyt(p,g,f)= A.anyt(p,g,f) * 3

Upvotes: 0

Views: 95

Answers (1)

Vishnu Kiran
Vishnu Kiran

Reputation: 652

You cannot assign the value of an expression to a function call. In your case if you want to change the value of variables a, b, c, p, q, r. You will have to do something like this.

class A:

    def __init__(self):

        self.a = 1
        self.b = 1
        self.c = 1
        self.p = 1
        self.q = 1
        self.r = 1


    def some(self,a, b, c):

        self.a = a
        self.b = b
        self.c = c

    def anyt(self, p, g, f):

        self.p = p
        self.g = g
        self.f = f


class B(A):

    def frog(self):

        self.some(self.a*2, self.b*2, self.c*2)


    def lion(self):

        self.anyt(self.p*3, self.g*3, self.f*3)

b = B()
b.frog()
print(b.c)
# Prints current value of c

This ensures the corresponding variable values change.

Upvotes: 3

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