Lets say i have something like this: This is file tree.py:
class leaf(): def green(): x = 100 This is file view.py:
from tree import leaf.green g = green() print g.x How do i get the variable form subclass green I know for class its just:
This is file tree.py:
class leaf(): x = 100 This is file view.py:
from tree import leaf class view(): g = leaf() print g.x I understand how to do it if both classes are in the same file. But i dont understand in two seprate files. Thanks, John
I think the root of your problem is that you need to learn more about how classes in Python work. Fortunately, the tutorial in the Python docs has a section on classes.
If that doesn't help, going through something like Learn Python the Hard Way and doing the exercises can be immensely helpful.
self as their first argument (which is the instance), and instance variables are referred to from within the class as self.varfrom other_module import SomeClass. You cannot import methods, for that you should just write a function outside a class.x is local to the method, i.e. it shouldn't (and can't, at least not easily) be accessed from the outside. Worse - it only exists while the method runs (and is removed after it returns).
Note that you can assign an attribute to a method (to any function, really):
class Leaf(object): def green(self): ... green.x = 100 print Leaf.green.x But that's propably not what you want (for starters, you can't access it as a local variable inside the method - because it isn't one) and in fact very rarely useful (unless you have a really good reason not to, just use a class).
classC is aclassthat inherits from C. Adefinside aclassis a method.