All Questions
33 questions
-2votes
1answer
291views
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 ...
- 177
2votes
1answer
1kviews
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 ...
- 171
2votes
3answers
187views
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 ...
- 31
3votes
2answers
463views
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 ...
1vote
1answer
510views
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 ...
- 233
2votes
0answers
34views
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
0votes
2answers
460views
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....
- 381
3votes
2answers
1kviews
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 ...
0votes
1answer
3kviews
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 ...
1vote
3answers
235views
Everthing in a class/classes or just part of the program?
I wanted to move my program into a class or classes because most of the form post I read say it makes the program easier to read, understand the flow of the code, and improve maintainability. ...
0votes
2answers
159views
Using a class for a collection element, with methods to access other collections
I'm hoping for a sanity check in my design thinking. I'm working with a small team on a website based on a MongoDB database. There are several collections in the DB -- for example, one representing ...
- 139
-1votes
1answer
153views
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 ...
29votes
2answers
73kviews
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, ...
- 697
0votes
3answers
2kviews
When NOT to use a class / member variable?
I am trying to learn WHEN NOT to use: classes member variables HERE IS THE CODE access_point_detection_classes.py from scapy.all import * class Handler : def __init__(self) : self....
- 119
7votes
1answer
20kviews
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 ...
- 181
