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When the method needs to refer to, bind, or unbind an attribute of its self object, it does so by standard attribute-reference syntax (e.g., self.name). The lack of implicit scoping may take some getting used to


Cover of Python in a Nutshell, 3rd Edition


If the method needs to reference a member of the object on which the method call is made, it must refer to such member using "self." (eg. self.memberName). There is no implicit access to member variables of the same object.