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python Programming Glossary: subclassingWhy is the Borg pattern better than the Singleton pattern in Python http://stackoverflow.com/questions/1318406/why-is-the-borg-pattern-better-than-the-singleton-pattern-in-python The real reason that borg is different comes down to subclassing. If you subclass a borg the subclass' objects have the same..
http://stackoverflow.com/questions/1456373/two-way-reverse-map the party but you can create your own dictionary type by subclassing dict and adding the logic that you want. Here's a basic example..
Easy pretty printing of floats in python? http://stackoverflow.com/questions/1566936/easy-pretty-printing-of-floats-in-python x x 1.29 3.00 22.12 3.41 y x 2 y 22.12 The problem with subclassing float is that it breaks code that's explicitly looking for a..
http://stackoverflow.com/questions/1710839/custom-distutils-commands implementing your new desired commands such as stage subclassing distutils.cmd the docs are weak but there are plenty of examples..
Python JSON serialize a Decimal object http://stackoverflow.com/questions/1960516/python-json-serialize-a-decimal-object python json share improve this question How about subclassing json.JSONEncoder class DecimalEncoder json.JSONEncoder def _iterencode..
Numpy ?˜smart??symmetric matrix http://stackoverflow.com/questions/2572916/numpy-smart-symmetric-matrix need a transparent symmetrization you might consider subclassing numpy.ndarray and simply redefining __setitem__ class SymNDArray..
Final classes in Python 3.x- something Guido isn't telling me? http://stackoverflow.com/questions/2825364/final-classes-in-python-3-x-something-guido-isnt-telling-me So my question is how exactly did Guido manage to prevent subclassing of bool class TestClass bool pass Traceback most recent call..
What to consider before subclassing list? http://stackoverflow.com/questions/3945940/what-to-consider-before-subclassing-list to consider before subclassing list I was recently going over a coding problem I was having.. I was having and someone looking at the code said that subclassing list was bad my problem was unrelated to that class . He said.. are the reasons. Alternately what should I consider before subclassing list in Python python list subclassing share improve this..
how do i rewrite this function to implement OrderedDict? http://stackoverflow.com/questions/4126348/how-do-i-rewrite-this-function-to-implement-ordereddict which doesn't exist but it's possible to create one by subclassing OrderedDict as illustrated below import collections class OrderedDefaultdict..
How to make an immutable object in Python? http://stackoverflow.com/questions/4828080/how-to-make-an-immutable-object-in-python that work only in Python 3 are acceptable . Update So subclassing tuple is the way to do it in Pure Python which works well except..
What is a mixin, and why are they useful? http://stackoverflow.com/questions/533631/what-is-a-mixin-and-why-are-they-useful inheritance to extend a class as opposed to 'proper' subclassing. Is this right Why would I want to do that rather than put the..
Python's use of __new__ and __init__? http://stackoverflow.com/questions/674304/pythons-use-of-new-and-init you shouldn't need to override __new__ unless you're subclassing an immutable type like str int unicode or tuple. From http mail.python.org..
Creating a singleton in python http://stackoverflow.com/questions/6760685/creating-a-singleton-in-python pass An ironic aspect of this approach is that it's using subclassing to implement a metaclass. One possible advantage is that unlike..
Defining the midpoint of a colormap in matplotlib http://stackoverflow.com/questions/7404116/defining-the-midpoint-of-a-colormap-in-matplotlib i want zero to be the middle. I think the way to do it is subclassing normalize and using the norm but i didn't find any example and..
http://stackoverflow.com/questions/742/class-views-in-django methods can have much more fine grained customization via subclassing which lets me repeat myself a lot less. I get tired of rewriting..
Subclassing Python's `property` http://stackoverflow.com/questions/12405087/subclassing-pythons-property Python's `property` In one of my classes I have a number of..
Compare (assert equality of) two complex data structures containing numpy arrays in unittest http://stackoverflow.com/questions/14246983/compare-assert-equality-of-two-complex-data-structures-containing-numpy-arrays is this any easier to implement Seems the same to me. Edit Subclassing numpy.ndarray sounds very promising but obviously I don't have..
Subclassing Python tuple with multiple __init__ arguments http://stackoverflow.com/questions/1565374/subclassing-python-tuple-with-multiple-init-arguments Python tuple with multiple __init__ arguments The following..
Subclassing dict: should dict.__init__() be called? http://stackoverflow.com/questions/2033150/subclassing-dict-should-dict-init-be-called dict should dict.__init__ be called Here is a twofold question..
Subclassing Python dictionary to override __setitem__ http://stackoverflow.com/questions/2060972/subclassing-python-dictionary-to-override-setitem Python dictionary to override __setitem__ I am building a class..
http://stackoverflow.com/questions/3238350/subclassing-int-in-python int in Python I'm interested in subclassing the built in int..
How to make an immutable object in Python? http://stackoverflow.com/questions/4828080/how-to-make-an-immutable-object-in-python then you can't even set attributes in the __init__ . Subclassing a tuple is a trick that works class Immutable tuple def __new__..
Subclassing numpy ndarray problem http://stackoverflow.com/questions/5149269/subclassing-numpy-ndarray-problem numpy ndarray problem I would like to subclass numpy ndarray...
Background thread with QThread in PyQt http://stackoverflow.com/questions/6783194/background-thread-with-qthread-in-pyqt problem. from PyQt4 import QtCore import time import sys # Subclassing QThread # http doc.qt.nokia.com latest qthread.html class AThread.. 0 while count 5 time.sleep 1 print Increasing count 1 # Subclassing QObject and using moveToThread # http labs.qt.nokia.com 2007..
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