Implementing prototypes OR instantiating class objects

Posted by intuited on Stack Overflow See other posts from Stack Overflow or by intuited
Published on 2010-06-15T04:28:40Z Indexed on 2010/06/15 4:32 UTC
Read the original article Hit count: 173

Filed under:

python

|

prototypal-inheritance

|

prototypes

I'm wondering how to implement prototypal inheritance in Python. It seems like the way to do this would be to either

use a metaclass to cause instantiations to actually be classes, rather than objects, or
use some magical powers to transform an existing object into a class.

The second method would seem to be more flexible, in that it could be applied to existing objects of varied types, while the first would likely be more convenient for typical use cases.

Insights on the practicality of these two approaches, as well as alternative suggestions, are hereby requested.

© Stack Overflow or respective owner

Related posts about python

unmet dependencies in Ubuntu 12.04

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I tried today to install a dvb-card on my Ubuntu 12.04 (Linux blauhai-linux 3.2.0-25-generic #40-Ubuntu SMP Wed May 23 20:30:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux ). The installation failed with an error. After that, i tried to install python (it was already installed but i got this error): linux:~$… >>> More
How can I get sikuli-ide to work?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I installed sikuli-ide with sudo apt-get install sikuli-ide Everything was fine until I tried to start it from the terminal. I typed sikuli-ide But the only response I got was [info] locale: en_US The application was not started, furthermore there is no desktop file and sikuli-ide does not… >>> More
Getting PATH right for python after MacPorts install

as seen on Super User - Search for 'Super User'
I can't import some python libraries (PIL, psycopg2) that I just installed with MacPorts. I looked through these forums, and tried to adjust my PATH variable in $HOME/.bash_profile in order to fix this but it did not work. I added the location of PIL and psycopg2 to PATH. I know that Terminal is… >>> More
call python with system() in R to run a python script emulating the python console

as seen on Stack Overflow - Search for 'Stack Overflow'
I want to pass a chunk of Python code to Python in R with something like system('python ...'), and I'm wondering if there is an easy way to emulate the python console in this case. For example, suppose the code is "print 'hello world'", how can I get the output like this in R? >>> print… >>> More
Python - Calling a non python program from python?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am currently struggling to call a non python program from a python script. I have a ~1000 files that when passed through this C++ program will generate ~1000 outputs. Each output file must have a distinct name. The command I wish to run is of the form: program_name -input -output -o1 -o2… >>> More

Related posts about prototypal-inheritance

Why was JavaScript Implemented Using Prototypal Inheritance?

as seen on Stack Overflow - Search for 'Stack Overflow'
There's lots of articles and posts explaining how JavaScript inheritance works, but I'm curious why JavaScript was implemented using prototypal inheritance instead of classical inheritance. I love JavaScript so I'm not saying it's bad thing... I'm just curious. >>> More
Capitalizing on JavaScript's prototypal inheritance

as seen on Game Development - Search for 'Game Development'
JavaScript has a class-free object system in which objects inherit properties directly from other objects. This is really powerful, but it is unfamiliar to classically trained programmers. If you attempt to apply classical design patterns directly to JavaScript, you will be frustrated. But if you… >>> More
improve javascript prototypal inheritance

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm using a classical javascript prototypal inheritance, like this: function Foo() {} Naknek.prototype = { //Do something }; var Foo = window.Foo = new Foo(); I want to know how I can improve this and why I can't use this model: var Foo = window.Foo = new function() { }; Foo.prototype = { //Do… >>> More
Javascript: prototypal inheritance and the prototype property

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I have a simple code fragment in JS working with prototype inheritance. function object(o) { function F() {} F.prototype = o; return new F(); } //the following code block has a alternate version var mammal = { color: "brown", getColor: function() { return this.color; … >>> More
Prototypal inheritance should save memory, right?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi Folks, I've been wondering: Using prototypes in JavaScript should be more memory efficient than attaching every member of an object directly to it for the following reasons: The prototype is just one single object. The instances hold only references to their prototype. Versus: Every instance… >>> More