Inheriting function data

Question

I have a question about inheriting data from functions, defined inside another class. I have written an example script to clarify myself. In this script I define a class called Test. Here I define x and y in the __init__() function. Thereafter, I make a calculation and return x,y. I then create another class called Inherit_Test that inherits the x,y from Test. In this class I define z and make a calculation with the inherited values from Test. Afterwards, I call the class with Values. The problem arises when I want to access the data stored in Values. The type of this object is "Inherited_Values", while you would expect the type to be int and have the value 3*4*43. I hope I have explained myself well enough, thanks!

class Test():
    def __init__(self, x , y ):
            self.x = x
            self.y = y
    def Calculation(self):
        self.x = 3*4 #self.x*self.x
        self.y = 43 #self.y*self.y
        return self.x, self.y

class Inherit_Test(Test):
    def __init__(self,z ):
        Test.__init__(self, x = Test.Calculation(self)[0], 
                              y = Test.Calculation(self)[1])
        self.z = z
    def Inherit_Calculation(self):
        self.z = self.x * self.y
        return self.z
    
Value = Inherit_Test(0)
Value.Inherit_Calculation()

user_17718870 · Answer

unfortunately, your question is not very clear defined and it is hard to assume what you exactly wanted to do. I'll try to help you with the following code :

class Test():
    def __init__(self):
        self.Calculation()     # instantiation of the self.x and self.y; no init params needed
    def Calculation(self):
        self.x = 3*4 #self.x*self.x
        self.y = 43 #self.y*self.y
        #return self.x, self.y # do you need to return something here ? 

class Inherit_Test(Test):
    def __init__(self):
        super().__init__()    # instantiation of the parameters of your super class
        #self.z = z           # do you need this part ? 
    def Inherit_Calculation(self):
        self.z = self.x * self.y
        return self.z

Result:

Value = Inherit_Test()
print(type(Value.Inherit_Calculation()))
print(Value.x)
print(type(Value.x))
print(Value.y)
print(type(Value.y))
print(Value.z)
print(type(Value.z))


12

43

516

Inheriting function data

1 Answers