Questions tagged [python-3.x]
Python 3 is the latest version of the Python programming language and was formally released on December 3rd, 2008.
156 questions
5votes
2answers
662views
Why did Python designers decide not to declare vars? [closed]
In Python when you want a local variable, you just assign to it x = 10. In most modern languages you declare local vars (regardless of type): JavaScript: let/const/var Swift: let/var Kotlin: val/var ...
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-3votes
2answers
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Is it better practice to set default values for optional argparse arguments?
I mention python's argparse as an example but this would apply to any CLI argument parser library for any language. Just generally speaking, at a high level, if there are a lot of optional arguments ...
- 109
1vote
3answers
302views
Python logging in shared functions called by multiple main programs
I have reviewed this, but it doesn't seem to address what I'm asking here. https://stackoverflow.com/questions/15727420/using-logging-in-multiple-modules I want to have multiple programs call the same ...
- 133
1vote
0answers
50views
How can I use django to render a rotating view of a database?
As a toy problem for learning Django, I am trying to create a simple web app that tracks encounters and initiative for one of my D&D campaigns. I have a database with models for combatants: class ...
2votes
3answers
419views
Does it make sense for an API with 1 daily job to do to be asynchronous?
This is a conceptual question about whether my specific use-case warrants the use of an asynchronous API. Language: Python 3.11 Framework: FastAPI (ASGI) I believe I am confused about what an ...
- 53
0votes
2answers
300views
Appropriate design pattern for providing a default Argparse instance, eliminating boilerplate
I'm using argparse.ArgumentParser extensively; however, it comes with a lot of boilerplate to set up, and this is especially noticeable when you've got more than a few common arguments that probably ...
- 19
0votes
1answer
203views
Match making algorithm respecting players' choices
I am currently developing an application in Python that has a match making functionality to form sports teams of 4 and group them by skill. The following has been implemented and works. E.g. Form ...
1vote
0answers
92views
What is the best way to implement the following type of paradigm?
I have the following piece of code. Line 1 is a container (for simplicity, one can think of it as a list of elements e1, e2, ..., en). Now there is a function function_fun which takes as input an ...
- 19
2votes
2answers
159views
OOP Best practices: Is there any reason to separate out Factory functionality from an abstract base class?
Consider the following python3 code: from abc import ABC, abstractmethod class Food(ABC): _food_factory_map = {} _recipes = {} @classmethod def getFood(cls, foodName): return ...
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1vote
2answers
1kviews
Should I duplicate or inherit a python dataclass which changes attributes based on the version of an API endpoint?
I'm working on a python library for a REST API.I'm using python data classes to represent the structure of the returned JSON The v2 of this API returns a slightly different object when compared to v1. ...
- 127
1vote
0answers
962views
Python - Where do I store data classes which are common across different files?
I'm working on a python wrapper for a REST API. I'm using python data classes to store the shape of the JSON response of each endpoint so developers have features like autocomplete and objects they ...
- 127
21votes
6answers
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Does subclassing int to forbid negative integers break Liskov Substitution Principle?
In Python 3, I subclassed int to forbid the creation of negative integers: class PositiveInteger(int): def __new__(cls, value): if value <= 0: raise ValueError("value ...
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-2votes
1answer
82views
python language construct or facility to tag entering and exiting a while loop
Here's what I want to achieve: while complex_compound_condition_statement: foobar() # ... do some stuff I would like the log output of the above to be: <timestamp> INFO: started doing stuff ...
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2votes
1answer
3kviews
How to add some data to an Enum in Python
I have a class that I use to define different types of plots I am performing class MyPlots(Enum): STANDARDSCALE = "standard" LOGSCALE = "log" there are default values ...
5votes
1answer
339views
Does my View Model violate the Single Responsibility Principle? Or am I just used to toy examples from tutorials?
I am a very beginner writing one of my first webapps. I'm using FastAPI and I'm stuck on the logic of creating an endpoint that has to do a lot of things before it returns something back to the user. ...
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