Django Rest Framework Authentication/Permission tip

/r/django
https://redd.it/1gyplon

Benchmark: DuckDB, Polars, Pandas, Arrow, SQLite, NanoCube on filtering / point queryies

While working on the NanoCube project, an in-process OLAP-style query engine written in Python, I needed a baseline performance comparison against the most prominent in-process data engines: DuckDB, Polars, Pandas, Arrow and SQLite. I already had a comparison with Pandas, but now I have it for all of them. My findings:

A purpose-built technology (here OLAP-style queries with NanoCube) written in Python can be faster than general purpose high-end solutions written in C.
A fully index SQL database is still a thing, although likely a bit outdated for modern data processing and analysis.
DuckDB and Polars are awesome technologies and best for large scale data processing.
Sorting of data matters! Do it! Always! If you can afford the time/cost to sort your data before storing it. Especially DuckDB and Nanocube deliver significantly faster query times.

The **full comparison** with many very nice charts can be found in the **NanoCube GitHub repo**. Maybe it's of interest to some of you. Enjoy...

|\#|technology|duration_sec|factor|
|:-|:-|:-|:-|
|0|NanoCube|0.016|1|
|1|SQLite (indexed)|0.133|8.312|
|2|Polars|0.534|33.375|
|3|Arrow|1.933|120.812|
|4|DuckDB|4.171|260.688|
|5|SQLite|12.452|778.25|
|6|Pandas|36.457|2278.56|

The table above shows the duration for 1000x point queries on the car_prices_us dataset (available on kaggle.com) containing 16x columns and 558,837x rows. The query is highly selective, filtering on 4 dimensions (model='Optima', trim='LX', make='Kia', body='Sedan') and aggregating column mmr.

/r/Python
https://redd.it/1gyoi7n

any performance issues for django-parler?

I am looking for i18n packages, django-parler seems good, but are there any cons?? it requires inner join, is it going to affect the performance?? is it negligible if I use select_related or prefect_relateed

/r/django
https://redd.it/1gywmyg

[OC] (Dooit V3) A very customizable TUI Todo Manager!



**What My Project Does:**

Dooit is a TUI based todo manager app which gives you a nice user interface to organize your tasks. Unlike other applications, dooit runs directly in your terminal!

It tries to be function and customizable at the same time



**Key Features:**

* An interactive & beautiful UI
* Fully customizable, you can configure your bar, your colors and how everything is displayed!
* Extensible, python config file allows you to do as much as you like!
* Vim like keybindings
* Topicwise separated Todo Lists (With branching)


**Target Audience:**


Anyone who uses the terminal!


**Comparison with Existing Alternatives:**

There are definitely a lot of options out there but I didnt find anyone which fulfilled all my requirements



**How to Get Started:**


Github Link: [Dooit](https://github.com/dooit-org/dooit)

Get started with the [Dooit Docs](https://dooit-org.github.io/dooit/)

/r/Python
https://redd.it/1gysoo4

DRF + React

Hello, everyone. I'm planning to build an ecomm over the next few weeks and would appreciate some guidance from more experienced developers. Could you share the best approach to take for building a scalable, efficient ecomm? Additionally, what libraries or tools do you recommend that could help streamline the development process and make things easier along the way?

/r/django
https://redd.it/1gyxp4q

Can't link CSS files to HTML in Flask Blueprints!

I’m a total beginner at (any) development and this is my first flask application. I’m having trouble linking CSS files to HTML when inside a blueprint. It works fine outside a blueprint.

Here's my project file structure -

project_root/
|
├── app.py
├── templates/
│ └── (global templates)
├── static/
│ └── (global static files)
├── auth/ # my blueprint
│ ├── __init__.py
│ ├── routes.py
│ ├── templates/
│ │ └── main.html
│ └── static/
│ └──main.css

I'm trying to link the auth/static/main.css file in the auth/templates/main.html file like this -

`<link rel = 'stylesheet' type="text/css" href="{{url_for('auth.static', filename='main.css')}}">`

I’ve tried changing the `url_for` with “static” or specifying the filename to auth.static.main.ss or static/main.css, but none work. It correctly displays the main.html but without any styling.

I suspect the `url_for` function inside the blueprint is incorrect.

/r/flask
https://redd.it/1gz0sps

Django forms?

Hey there 👋

I am struggling to understand Django forms can anyone help share some resources

/r/djangolearning
https://redd.it/1gyn0hh

Incoming data not being comitted to the database

I am trying to make a registration page, for my website. The data is coming from the javanoscript frontend to the backend successfully (evident by browser logs.) and by print statements, but the incoming data is failing to commit to the database.

Background, App is made with "Role Based Access" in mind with models User, Roles and UserRoles (association table)

Influencer and Sponsor inherit from User and their primary keys and foreign keys are same. i.e (influencer_id and sponsor_id) respectively.

Here creation of instance of User first is necessary so that its (user_id) could be used to populate the primary keys of Influencer and Sponsor.



@app.route('/register', methods='POST')
def register():
data = request.getjson()

username = data.get('username')
email = data.get('email')
password = data.get('password')
role = data.get('role')
socialm =data.get('socialmedia')
handle = data.get('handle')
country = data.get('country')


/r/flask
https://redd.it/1gysp9f

Monday Daily Thread: Project ideas!

# Weekly Thread: Project Ideas 💡

Welcome to our weekly Project Ideas thread! Whether you're a newbie looking for a first project or an expert seeking a new challenge, this is the place for you.

## How it Works:

1. **Suggest a Project**: Comment your project idea—be it beginner-friendly or advanced.
2. **Build & Share**: If you complete a project, reply to the original comment, share your experience, and attach your source code.
3. **Explore**: Looking for ideas? Check out Al Sweigart's ["The Big Book of Small Python Projects"](https://www.amazon.com/Big-Book-Small-Python-Programming/dp/1718501242) for inspiration.

## Guidelines:

* Clearly state the difficulty level.
* Provide a brief denoscription and, if possible, outline the tech stack.
* Feel free to link to tutorials or resources that might help.

# Example Submissions:

## Project Idea: Chatbot

**Difficulty**: Intermediate

**Tech Stack**: Python, NLP, Flask/FastAPI/Litestar

**Denoscription**: Create a chatbot that can answer FAQs for a website.

**Resources**: [Building a Chatbot with Python](https://www.youtube.com/watch?v=a37BL0stIuM)

# Project Idea: Weather Dashboard

**Difficulty**: Beginner

**Tech Stack**: HTML, CSS, JavaScript, API

**Denoscription**: Build a dashboard that displays real-time weather information using a weather API.

**Resources**: [Weather API Tutorial](https://www.youtube.com/watch?v=9P5MY_2i7K8)

## Project Idea: File Organizer

**Difficulty**: Beginner

**Tech Stack**: Python, File I/O

**Denoscription**: Create a noscript that organizes files in a directory into sub-folders based on file type.

**Resources**: [Automate the Boring Stuff: Organizing Files](https://automatetheboringstuff.com/2e/chapter9/)

Let's help each other grow. Happy

/r/Python
https://redd.it/1gz5fou

I made a Spotify → YouTube Music converter that doesn't need API keys! [GUI]

Hey r/python! After Spotify decided to make their mobile app practically unusable for free users, my friend u/zakede and I decided to switch to YT Music. With our huge libraries, we needed something to convert our playlists, so we made this. It works with a Web GUI (made in FastHTML), and did I mention you don't need any API or OAuth keys?

**What it does:**

* Transfers your Spotify playlists/albums/liked songs to YouTube Music
* Has a simple Web GUI
* Better song search than the default YouTube one (at least in my testing)
* No API keys needed

**Target Audience:** This is for anyone who:

* Is switching from Spotify to YouTube Music
* Wants to maintain libraries on both platforms (Library sync is on the roadmap)
* Is tired of copying playlists manually
* Doesn't want to mess with API keys

**How it's different:** Most existing tools either:

* Require you to get API keys and do OAuth (which is currently [broken](https://github.com/sigma67/ytmusicapi/issues/676) for YT Music)
* Are online services that are slow and have low limits (the one I tried only allowed 150 songs per playlist and a total of 5 playlists)
* Are CLI-only

Here's the source: [spotify-to-ytm](https://github.com/Kan1shak/spotify-to-ytm)

Would love to hear your thoughts! Let me know if you try it out

/r/Python
https://redd.it/1gz2vhf

Django + MTN momo integration.

Hi everyone,

I’m working on a Django project, and I want to integrate MTN MoMo (Mobile Money) for payment processing. I’ve gone through the MTN MoMo API documentation, but I’m still a bit confused about how to set it up with Django.

I’m also wondering if there are any reliable third-party APIs or libraries available that make the integration process simpler or more efficient

If anyone here has experience with this, could you share

Thanks.

/r/django
https://redd.it/1gz4d68

How to get user input for a Flask App with Autogen AI Agents?

Hi,

I am trying to implement Autogen agents with a Flask App. The new version of autogen-agentchat library allows a rich architecture for multiagent systems.

The following is an example from the documentation (Swarm Chat) that starts an agent chat, where at some point a user input is needed. The chat stops at that point. Then whenever the user input is obtained the chat is resumed.

import asyncio
from autogen_ext.models import OpenAIChatCompletionClient
from autogen_agentchat.agents import AssistantAgent
from autogen_agentchat.teams import Swarm
from autogen_agentchat.task import HandoffTermination, Console, MaxMessageTermination
from autogen_agentchat.messages import HandoffMessage
async def main() -> None:
model_client = OpenAIChatCompletionClient(model="gpt-4o" api_key=os.environ.get("OPENAI_API_KEY))
agent = AssistantAgent(
"Alice",
model_client=model_client,
handoffs=["user"],
system_message="You are Alice and you only answer questions about yourself, ask the user for help if needed.",
)
termination = HandoffTermination(target="user") | MaxMessageTermination(3)
team = Swarm([agent], termination_condition=termination)
# Start the conversation.
await Console(team.run_stream(task="What is bob's birthday?"))
# Resume with user feedback.
await Console(
team.run_stream(
task=HandoffMessage(source="user", target="Alice", content="Bob's birthday is on 1st January.")
)
)
asyncio.run(main())

I want to implement this in a Flask App. So there will be an endpoint that receives user messages. Then:

If

/r/flask
https://redd.it/1gyrccn

D Self-Promotion Thread

Please post your personal projects, startups, product placements, collaboration needs, blogs etc.

Please mention the payment and pricing requirements for products and services.

Please do not post link shorteners, link aggregator websites , or auto-subscribe links.

--

Any abuse of trust will lead to bans.

Encourage others who create new posts for questions to post here instead!

Thread will stay alive until next one so keep posting after the date in the noscript.

--

Meta: This is an experiment. If the community doesnt like this, we will cancel it. This is to encourage those in the community to promote their work by not spamming the main threads.

/r/MachineLearning
https://redd.it/1gyhfxm

BadRequestKey error. Getting an error saying the keyerror is confirmpassword. Is there a problem in my code?

@app.route('/register', methods=['GET' , 'POST'])
def register():
from authoperations import registeruser
if request.method == 'POST':
username = request.form['username']
password = request.form['password']
confirmpassword = request.form'confirm_password'

/r/flask
https://redd.it/1gy6mbh

What do you think is the most visually appealing or 'good-looking' Python GUI library, and why?

I’m looking for a GUI library that provides a sleek and modern interface with attractive, polished design elements. Ideally, it should support custom styling and look aesthetically pleasing out-of-the-box. Which libraries would you recommend for creating visually appealing desktop applications in Python?

/r/Python
https://redd.it/1gzmv9p

What do you think of front-end python libraries such as Reflex (old Pynecone)?

As a doctor, Python has been really useful for me in a bunch of ways. Lately, I`ve been trying to learn web development, saw some Flask/Jinja/HTML/CSS tutorials, but doing anything without javanoscript seems very clunky and unnatural.


Then, I saw this library called REFLEX (old Pynecone). Seems very beautiful and powerful..



The thing is. Is it worth for me to use my limited time to learn a framework like this or should I just go ahead and learn Javanoscript/React already?


What do you guys think? I won`t be a professional developer.

/r/Python
https://redd.it/1gznoub

Security by fragility

So one of our websites got attacked today. Not a critical website,

Certain pages that require a secret 8-character alphanumeric code were being called thousands of times a minute.

This could have been a problem.

But thanks to my trusty SQLite3 database and literally zero optimisations anywhere, my server dutifully went down in minutes.

And so the hacker was not able to retrieve any valuable information.

And now we implemented some basic defenses.

Can't get hacked if your site's crashed !

/r/django
https://redd.it/1gzsjtv

nxt-python and pyusb on OpenSuse Linux

I have a mindstorm NXT lying around in the house that my kinds used for school several years ago. I tought of interfacing it with python. I downloaded the nxt-python. It uses pyusb. When I tested it out with the tutorial from [https://ni.srht.site/nxt-python/latest/handbook/tutorial.html](https://ni.srht.site/nxt-python/latest/handbook/tutorial.html) and tried to locate the device using the following code:

#!/usr/bin/python3
"""NXT-Python tutorial: use touch sensor."""
import time

import nxt.locator
import nxt.sensor
import nxt.sensor.generic

with nxt.locator.find() as b:

# Get the sensor connected to port 1, not a digital sensor, must give the sensor

# class.
mysensor = b.get_sensor(nxt.sensor.Port.S1, nxt.sensor.generic.Touch)

# Read the sensor in a loop (until interrupted).
print("Use Ctrl-C to interrupt")
while True:


/r/Python
https://redd.it/1gztwtn

Deploying Flask-based Microservices on AWS with ECS Service Connect

The playlist is broken into six parts:

1. An introduction to ECS Service Connect and the various AWS components that will be used
2. Run the flask-based microservice architecture locally before diving into AWS
3. Get the flask-based microservice architecture **just working** on AWS. We'll rely on a lot of the defaults provided by AWS on the networking to get a working example quickly that you can see in action on AWS
4. We'll do the same as the previous video, but not rely on default networking setup by AWS. We'll configure networking ourselves with the recommended AWS approach so the app is production-ready
5. Use GitHub Actions to automate deployments to our flask app code running on our microservice architecture on AWS
6. Run a CDK (Cloud Development Kit) noscript that will create both the AWS networking components, as well as the ECS components. After running the noscript with a single `cdk deploy --all` command, the microservice architecture will be fully functional

This tutorial truly is end-to-end. If you enjoy the content, you can help me a ton by doing any or all of the following:

[supporting me on Patreon](https://www.patreon.com/programmingwithalex)
subscribing to my YouTube channel
liking and/or commenting on the videos
sharing the video(s) or channel on any

/r/flask
https://redd.it/1gzmk8u

Tuesday Daily Thread: Advanced questions

# Weekly Wednesday Thread: Advanced Questions 🐍

Dive deep into Python with our Advanced Questions thread! This space is reserved for questions about more advanced Python topics, frameworks, and best practices.

## How it Works:

1. **Ask Away**: Post your advanced Python questions here.
2. **Expert Insights**: Get answers from experienced developers.
3. **Resource Pool**: Share or discover tutorials, articles, and tips.

## Guidelines:

* This thread is for **advanced questions only**. Beginner questions are welcome in our [Daily Beginner Thread](#daily-beginner-thread-link) every Thursday.
* Questions that are not advanced may be removed and redirected to the appropriate thread.

## Recommended Resources:

* If you don't receive a response, consider exploring r/LearnPython or join the [Python Discord Server](https://discord.gg/python) for quicker assistance.

## Example Questions:

1. **How can you implement a custom memory allocator in Python?**
2. **What are the best practices for optimizing Cython code for heavy numerical computations?**
3. **How do you set up a multi-threaded architecture using Python's Global Interpreter Lock (GIL)?**
4. **Can you explain the intricacies of metaclasses and how they influence object-oriented design in Python?**
5. **How would you go about implementing a distributed task queue using Celery and RabbitMQ?**
6. **What are some advanced use-cases for Python's decorators?**
7. **How can you achieve real-time data streaming in Python with WebSockets?**
8. **What are the

/r/Python
https://redd.it/1gzy1hi

" cannot import name 'views' from 'mysite' "

Am at the 3rd page of Django - Build your own app tutorial at this very part, and I cannot access "/polls/34/" because it shows :

> from . import views
ImportError: cannot import name 'views' from 'mysite' (C:\\Users\\XXYY\\djangotutorial\\mysite\\__init__.py)

How do I fix it?



/r/djangolearning
https://redd.it/1gzec8n