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Mar 2, 2013 · 2. difference in both is just the View Point. Encapsulation word is used for hiding data if our aim is to prevent client seeing inside view of our logic. Abstraction word is used for hiding data if our aim is to show our client a out side view. Outside view means that let suppose. BubbleSort(){.
Apr 13, 2009 · Short Answer. Encapsulation - Hiding and/or restricting access to certain parts of a system, while exposing the necessary interfaces. Abstraction - Considering something with certain characteristics removed, apart from concrete realities, specific objects, or actual instances, thereby reducing complexity.
Jun 3, 2013 · SQLAlchemy makes this a reasonable approach. A "DB Abstraction Layer" will happen in the normal course of events. Indeed, because of DB-API (as used by SQLAlchemy) you gave two abstraction layers: ORM and DB-API. answered Mar 25, 2009 at 0:40.
3. In simple term, Abstraction is conceptual and Poly is behavioral. In order to achieve abstraction in OOP, you need Poly. Abstraction in object oriented programming is a concept or design pattern I may say, which enables better isolation, loosely coupling thus testability, and reusability and extensibility.
I am having trouble in using inheritance with Python. While the concept seems too easy for me in Java yet up till now I have been unable to understand in Python which is surprising to me at least. I have a prototype which follow: def __init__(self, shape_name): self.shape = shape_name. def __init__(self, name):
In programming, we define abstractions as functions (and some other constructs like classes and modules, but let's focus on functions for now). A function essentially names a set of single statements, so a function essentially is an abstraction -- see the examples in your book for details. The beauty of it all.
Apr 15, 2012 · If you want to create a class that pieces together various classes that partially some protocol, then just inherit from your implementing classes: #Always inherit from object, or some subtype thereof, unless you want your code to behave differently in python 2 and python 3. class AbstractGraph(object): def method1(self):
Since Python 3.3 a bug was fixed meaning the property() decorator is now correctly identified as abstract when applied to an abstract method. Note: Order matters, you have to use @property above @abstractmethod. Python 3.3+: (python docs):
Jul 29, 2013 · Worse solution. If you want to implicitly call methods of list items, there is a way ;) Below is the implementation that will first search for list attribute, and if not found, will assume it is a method and will call every item in a list: class BadImplicitContainer(list): def __getattr__(self, name): def _wrapper(*args, **kwargs):
Feb 4, 2015 · Abstraction is understanding the essence of the thing. A real world example is abstract art. The artists of this style try to capture/paint the essence of the thing that still allows it to be the thing. This brown smear of 4 lines captures the essence of what a bull is. Encapsulation is black boxing.
