All Questions
33 questions
2
votes
1
answer
1k
views
In Python when is absolutely preferable to use a class instead of a module?
Python is the language I use most in this period.
My background in Java
Before start learning Python I have programmed in Java language. In Java all code is written inside the methods of a class and ...
- 218k
-2
votes
1
answer
295
views
Defining functions inside vs outside a class
Say I have a class with a function do_thing that is comprised of multiple steps, which themselves segregate into functions (first_process and second_process). At what point would this be considered ...
- 11.9k
2
votes
3
answers
189
views
Which association should be in the class diagram
there are a vehicle class and customer class . In short, in the customer class there is a function that shows 'can this person or company rent that car'.The function uses a object of vehicle and ...
- 81.4k
22
votes
1
answer
52k
views
Why use classes when programming a tkinter gui in python
I program primarily in python and have programmed a couple of GUI's with Tkinter, every tutorial I have ever seen has recommended defining and using a class for the GUI, but my GUI runs flawlessly ...
- 3
36
votes
3
answers
39k
views
Is it ok to have multiple classes in the same file in Python?
In Java and PHP (although not strictly required), you are expected to write each class on its own file, with file's name is that of the class as a best practice.
But in Python, or at least in the ...
- 447
3
votes
2
answers
464
views
Accessing properties from embedded objects as attributes of container class
In Python, I have a class C which embeds objects from classes A and B. Is it considered good practice to creates shortcuts from the properties of embedded objects of classes A and B as attributes of ...
- 398
1
vote
1
answer
511
views
Creating an attribute of an object versus a method in the class
This question pertains to properly structuring a class. The object of a class I have is instantiated with multiple parameters. Many of these parameters are then manipulated with each other to derive ...
- 1,986
29
votes
2
answers
73k
views
Classes vs. modules in Python
Python has many modules (such as re) that perform a specific set of actions. You can call the functions of this module and get results, and the module as a whole has an idea behind it (in this case, ...
- 105
2
votes
0
answers
34
views
Update class member gradually [duplicate]
Consider the following:
import typing
class MyClass(object):
def __init__(self):
self.my_member: typing.Optional[dict] = None
def update_member(self):
self.my_member = {}
...
- 129
7
votes
1
answer
20k
views
Is calling the superclass constructor in a subclass really important?
The following piece of Python code uses a superclass solely as the repository of functions that one of more subclasses may draw from:
class Class(object):
''' A trivial repository for functions ...
CommunityBot
- 1
3
votes
3
answers
7k
views
What is the difference between proxy class and delegation in Python?
Wiki:
A proxy, in its most general form, is a class functioning as an interface to something else. The proxy could interface to anything: a network connection, a large object in memory, a file, or ...
CommunityBot
- 1
0
votes
2
answers
460
views
Dynamically choose whether to use __slots__ in a class
I've got a generic container class:
from typing import Container, Generic, TypeVar, NamedTuple
import sys
fixed_typing = (sys.version_info >= (3, 6, 2) or
(3, 5, 3) <= sys....
- 2,668
3
votes
2
answers
1k
views
Is “A programmer-defined type.” a right definition of "class" in Python?
In Think Python 2e "class" is defined as "A programmer-defined type. A class definition creates a new class object."
But isn't a built-in type considered a class too?
Using Python 3.4.0, the ...
0
votes
1
answer
3k
views
Instantiate a class from a config file. Where should the parse function go?
I have a class in python that is instantiated from the values of a (json) config file. I was wondering what is the best practise to do that (if there is a best practise and is not just a matter of ...
- 9,237
-1
votes
1
answer
153
views
Memory override using classes when using lists in python
I am trying to create a new variable with class Lamb (called hold) using a variable (main), which also has class Lamb. Lamb has two parameters (x and y).
I create a variable called main with class ...
CommunityBot
- 1