Passing Variables up and down through classes

[metulburr]

One way is to use inheritance.

An example of how sub classes can alter the class variable "count"

class Employee:
    count = 0
    def __init__(self):
        Employee.count += 1
        
class FullTime(Employee):
    pass 

class PartTime(Employee): 
    def add_to(self, num):
        Employee.count += num
        
print(Employee.count)
obj1 = FullTime()
obj2 = FullTime()
obj3 = PartTime()
print(Employee.count)
obj3.add_to(3)
print(Employee.count)

Output:
0
3
6

All classes the super class Employee and the two sub classes FullTime and PartTime share count value. Whereas if you created an instance variable via self.var it would be per object.

so in your case

class Configuration:
    pass 
    
class guiMainWindow(Configuration):
    pass 
    
class guiConfigWindow(guiMainWindow):
    pass