I am trying to call an instance variable from a "parent" class (subclass) to it's "child" class (subsubclass)
class mainclass():
def __init__(self):
self.mainclassvar1 = "mainclass"
class subclass(mainclass):
def __init__(self):
self.subclassvar1 = "subclass"
def changeval(self):
self.subclassvar1 = "subclassedited"
class subsubclass(subclass):
def __init__(self):
self.subsubclassvar1 = subclass.subclassvar1 #<- naturally this fails
def handler():
main=mainclass()
sub = subclass()
sub.changeval()
subsub = subsubclass()
print(subsub.subsubclassvar1)# <- how do I achieve this? I would expect "subclassedited" but it doesn't
if __name__ == "__main__":
handler()
The above does not work obviously but I am trying to show what I am trying to achieve in my head.
if I change the class subsubclass(subclass) as follows it semi-works:
class subsubclass(subclass):
def __init__(self):
subclass.__init__(self)
self.subsubclassvar1 = self.subclassvar1
however the returned value is the original default value of subclass instead of the expected subclassedited .
I am not sure if I should even be trying to do this but I've got some code where the logic has now come to this point and I want to try see if I can get details from the middle class in to the final child class in their final modified states instead of the defaults and without refactoring a lot of code.
Each __init__
method should be invoking the parent's __init__
method, so that the instance is properly initialized for all the classes in the hierarchy.
class mainclass:
def __init__(self):
super().__init__()
self.mainclassvar1 = "mainclass"
class subclass(mainclass):
def __init__(self):
super().__init__()
self.subclassvar1 = "subclass"
def changeval(self):
self.subclassvar1 = "subclassedited"
class subsubclass(subclass):
def __init__(self):
super().__init__()
# Not sure why you would really need this, but...
self.subsubclassvar1 = self.subclassvar1
There's no reason, though that subsub.subclassvar1
should be related to sub.subclassvar1
, though. Calling sub.changeval()
has nothing to do with subsub
.
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