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Showing posts with the label Inheritance

Trying To Subclass But Getting Object.__init__() Takes No Parameters

I'm trying to subclass web.form.Form from the webpy framework to change the behavior (it render… Read more Trying To Subclass But Getting Object.__init__() Takes No Parameters

Simple Inheritance Issue With Django Templates

just getting started in Django, and I have some problems with the inheritances. It just seems that … Read more Simple Inheritance Issue With Django Templates

Pass A Parent Class As An Argument?

Is it possible to leave a parent class unspecified until an instance is created? e.g. something lik… Read more Pass A Parent Class As An Argument?

Weird Inheritance With Metaclasses

I'm experiencing some really weird problems in Python when trying to inherit from a class with … Read more Weird Inheritance With Metaclasses

Inheriting From Instance In Python

In Python, I would like to construct an instance of the Child's class directly from an instance… Read more Inheriting From Instance In Python

How To Determine The Closest Common Ancestor Class

Suppose I have four classes: A, B derived from A, C derived from A, and D derived from C. (So I alw… Read more How To Determine The Closest Common Ancestor Class

Python Shell Shows No Error But Program Doesn't Run

I wrote this program to learn the basics of OOP. When I run this program from IDLE in the Python Sh… Read more Python Shell Shows No Error But Program Doesn't Run

How To Inherit A Python Base Class?

dir/ | |___ __init__.py | |___ Base_class.py | |___ Subclass.py __init__.py is empty(a… Read more How To Inherit A Python Base Class?

Recursionerror: Maximum Recursion Depth Exceeded While Calling A Python Object(algorithmic Change Required)

I am learning about Class Inheritance and overriding methods in python. To implement my learning, I… Read more Recursionerror: Maximum Recursion Depth Exceeded While Calling A Python Object(algorithmic Change Required)

Django Form - Set Label

I have a form that inherits from 2 other forms. In my form, I want to change the label of a field … Read more Django Form - Set Label

Inheritance Threading.thread Class Does Not Work

I'm new in multithreading, so the answer is probably very simple. I'm trying to make two i… Read more Inheritance Threading.thread Class Does Not Work

Implementing A Dict-like Object With __getattr__ And __setattr__ Functionality

I'm trying to implement a dict-like object which can be accessed/modified with __getattr__ and … Read more Implementing A Dict-like Object With __getattr__ And __setattr__ Functionality

Caching Attributes In Superclass

I have a class which caches some values to avoid computing them many times, for instance class A(ob… Read more Caching Attributes In Superclass

Python: Derived Classes Access Dictionary Of Base Class In The Same Memory Location

I'm wondering why a dictionary, that is defined in a base class and is accessed from derived cl… Read more Python: Derived Classes Access Dictionary Of Base Class In The Same Memory Location

Dynamically Derive A Class In Python

Possible Duplicate: Python dynamic inheritance: How to choose base class upon instance creation? … Read more Dynamically Derive A Class In Python

Python: How To Copy All Attibutes From Base Class To Derived One

I want to achieve the following: #!/usr/bin/python class SuperHero(object): def setName(self, … Read more Python: How To Copy All Attibutes From Base Class To Derived One

How To Provide Additional Initialization For A Subclass Of Namedtuple?

Suppose I have a namedtuple like this: EdgeBase = namedtuple('EdgeBase', 'left, right&#… Read more How To Provide Additional Initialization For A Subclass Of Namedtuple?

Python - Accessing Parent Class Decorators Inside Class Declaration

Let's say I have this class: class Foo: @classmethod def some_decorator(cls, ...): … Read more Python - Accessing Parent Class Decorators Inside Class Declaration

Override List's Builtins Dynamically In Class Scope

Purely curiosity question: class Li(list): pass m, n= Li([1]), Li([2]) def r(*args, **kwargs): rais… Read more Override List's Builtins Dynamically In Class Scope

Useless Super In Multiple Inheritance?

in multiple inheritance how super() works? for example here I have Two init and I want to send args… Read more Useless Super In Multiple Inheritance?