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
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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
...
- 235
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3
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616
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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
2
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3
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457
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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
0
votes
1
answer
231
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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 ...
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2
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2
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170
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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 ...
- 29
1
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0
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1k
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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 ...
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-2
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1
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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 ...
- 151
5
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1
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365
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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. ...
- 159
2
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2
answers
333
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What is the best way to compartmentalize complex logic problems?
I am working on a problem with lots of if-then-else calculations. I am trying to compartmentalize the logic to make it more maintainable and less error prone. But, as I try options, I don't see what ...
- 139
4
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2
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Should similar standalone functions go in a class?
I'm working to create a library in python that myself and a few colleagues will use. I'm struggling to conceptually understand how to best organize some code that feels like it doesn't cleanly fit ...
user400809
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6
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Is it reasonable to use dictionaries instead of arguments?
In python I often see functions with a lot of arguments. For example:
def translate(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p):
// some code
return(x, y, z)
I like this pattern in some ...
- 323
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0
answers
55
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Sync image files from network with mariadb-Database
i have as a mechanical engineering student in my practice semester to create a database that includes about 100k+ paths to images in our network. Every, lets say week, i have to synchronize all ...
- 1
0
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1
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127
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designing high throughout system for storing hundred thousands incoming records per second in SQL server database
In our company we have a requirement where we would like to store hundred thousands incoming records per seconds. we currently a pub-sub model for processing many records(100/sec) from many system(~...
- 107
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3
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6k
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"Hard coded" vs. configuration files for values in libraries? (code organization question)
I'm trying to get a good understanding as to whether there is a best practice or standard regarding keeping values within your code libraries or referencing them from another config file. I don't ...
- 13
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1
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365
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How to design "define-by-run" API?
I am amazed by the way APIs of some machine learning packages are designed, namely Chainer's and Pytorch's "define-by-run" API. Even Optuna, a hyper parameter tuning library has "define-...
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1
answer
2k
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Python generating payload and parsing payload
(Using python) I am looking to generate a bytes (or can be string that I convert to bytes) that is a message to send over TCP. The format is [Header][Length][Payload].
Within [Header] is a [...
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2
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1k
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Python import order, mixing from ... import ... and import ... (and import ... as ...)
This is the mess of imports currently at the top of my file:
import argparse
from copy import deepcopy
from functools import cmp_to_key, partial
from itertools import chain
import math
from ...
user224123
-4
votes
1
answer
1k
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Reading txt file till certain point and then create new txt file out of existing file
I have a txt file from where I want to create new files based on the data which is up to '$'character.
My input file looks like:
string1
string2
string3
$string4
string5
$string6
string7
... (and so ...
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1
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187
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How to deploy python microservices app updates?
I'm working on python microservices based app and I'm wondering how to ship updates.
Let's start by a summary of what I have:
Code base on git (several repos)
The app is running on several remote ...
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1
answer
150
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Best practices when interfacing Python and C code
I have a piece of code that I developed in an academic context for which I would like to build a nice frontend. My approach to coding has been very academic to this point (read: I made stuff up as I ...
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1
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142
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Finding the domain(s) of variables in a Linear Program using the constraints? (Constraint programming/Linear programming)
Forgive my jargon , as I'm not very familiar with Constraint Satisfaction Problem(s) or Linear Programming procedures (For eg: Presolve)
I have very trivial constraint set from variables of ...
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Proper program structuring in Python
So, recently I have been doing a lot of programming in Python.
I have noticed that my programs can be somewhat hard to read. I usually have one main class which does everything, sort of like this:
...
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Birthday Paradox, Analytical and Monte Carlo solutions give two systemically slightly different results [closed]
I was doing a Monte Carlo implementation of the Birthday Paradox in Python and I wanted to check if the results where the same as in the analytical implementation of the same problem (As they should ...
0
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1
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173
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How to expose multiprocessing python application to support invocation from command line and web
I have a python forecasting application that, for a given Entity, executes a fbprophet model multiple times varying the hyperparameters for each execution while tracking the best fit across the runs. ...
- 101
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127
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How to design realtime deeplearning based application for robotics using python?
I have created a machine learning software that detects objects(duh!), processes the objects based on some computer vision parameters and then triggers some hardware that puts the object in the ...
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