A simple file-sharing app built in Python with GUI, host discovery, drag-and-drop.

Hi everyone! 👋

This is a Python-based file sharing app I built as a weekend project.

**What My Project Does**

* Simple GUI for sending and receiving files over a local network
* Sender side:
* Auto-host discovery (or manual IP input)
* Transfer status, drag-and-drop file support, and file integrity check using hashes
* Receiver side:
* Set a listening port and destination folder to receive files
* Supports multiple file transfers, works across machines (even VMs with some tweaks)

**Target Audience**

This is mainly a **learning-focused, hobby project** and is ideal for:

* Beginners learning networking with Python
* People who want to understand sockets, GUI integration, and file transfers

It's not meant for production, but the logic is clean and it’s a great foundation to build on.

**Comparison**

There are plenty of file transfer tools like Snapdrop, LAN Share, and FTP servers. This app differs by:

* Being **pure Python**, no setup or third-party dependencies
* Teaching-oriented — **great for learning sockets, GUIs, and local networking**

Built using **socket**, **tkinter**, and standard Python libraries. Some parts were tricky (like VM discovery), but I learned a lot along the way. Built this mostly using GitHub Copilot + debugging manually - had a lot of fun in doing so.

🔗

/r/Python
https://redd.it/1l5bjyr

Am I dumb? Why does Flask just refuse to work?

https://preview.redd.it/obujwa5y8f5f1.png?width=387&format=png&auto=webp&s=b859848ca12288d53f574c0fa9810ed474093a36

https://preview.redd.it/rcbu2df29f5f1.png?width=645&format=png&auto=webp&s=015e5cd5b4d548e2ec6517207440ab14c3ceb6d5

https://preview.redd.it/u3fulu8k9f5f1.png?width=751&format=png&auto=webp&s=0c492372a70f2ef7bd9ffb7de7c13edba72aa643

https://preview.redd.it/gei7k73m9f5f1.png?width=652&format=png&auto=webp&s=94ec9027991c72ca0c8bb2144e78b34a173dd2f8

https://preview.redd.it/nwzgds3p9f5f1.png?width=610&format=png&auto=webp&s=6328322de11734fdfeef5f43d96bb1c3319ff124

https://preview.redd.it/7uxhip5x9f5f1.png?width=836&format=png&auto=webp&s=d82d28b7c3f6b6c43f7b2b392a8fd1906e24cead

https://preview.redd.it/n3r92vqqaf5f1.png?width=1279&format=png&auto=webp&s=416858a0d81f87fd20d325256b9e78f58ee4cc8f

I have no clue why the site doesn't display anything. Like I think the index function is just not called for some reason. i've tried putting print statements within the index function and they never print anything.

When I click on the link, nothing appears, its just perpetual loading. i've checked a trillion times that the folder has the python file and then a templates folder with index.html inside.

I've tried tutorials, I've copy pasted 1:1 programs that are meant to work, everything leads to the same exact result, so i don't know if its my code anymore. I've tried reinstalling python, reinstalling flask, and nothing ever works. It's not just my device, my school one is also experiencing the same issue.

does anyone know what i can do?? if you need any more details please tell me. i'm kinda not good so apologies if im doing or missing something horribly obvious

/r/flask
https://redd.it/1l5b52d

Closing the gap: strict CSP in the Django world | Wagtail CMS
https://wagtail.org/blog/closing-the-gap-strict-csp-compatibility/

/r/django
https://redd.it/1l4dbi8

Pydantic / Celery Seamless Integration

I've been looking for existing pydantic - celery integrations and found some that aren't seamless so I built on top of them and turned them into a 1 line integration.

[https://github.com/jwnwilson/celery\_pydantic](https://github.com/jwnwilson/celery_pydantic)

**What My Project Does**

* Allow you to use pydantic objects as celery task arguments
* Allow you to return pydantic objecst from celery tasks

**Target Audience**

* Anyone who wants to use pydantic with celery.

**Comparison**

* [This blog post](https://benninger.ca/posts/celery-serializer-pydantic/) is the majority of the code above, but it requires registering each model manually, which I didn't want to do.
* [Celery’s official Pydantic integration](https://docs.celeryq.dev/en/v5.5.2/userguide/tasks.html?ref=blog.dosu.dev#argument-validation-with-pydantic) only accepts plain dicts in arguments, not pydantic models. It also only returns dicts.

You can also steal this file directly if you prefer:
[https://github.com/jwnwilson/celery\_pydantic/blob/main/celery\_pydantic/serializer.py](https://github.com/jwnwilson/celery_pydantic/blob/main/celery_pydantic/serializer.py)

There are some performance improvements that can be made with better json parsers so keep that in mind if you want to use this for larger projects. Would love feedback, hope it's helpful.

/r/Python
https://redd.it/1l5m6s5

Topographic Map to 3D Model Converter

What my project does

Takes an image of a topographic map and converts it into a .obj model.

Target audience
This is a pretty simple project with a lot of room to grow, so I'd say this is more of a beginner project seeing as how little time it took to produce.

Comparison I created this project because I couldn't really find anything else like it, so I'm not sure there is another project that does the same thing (at least, not one that I have found yet).

I created this for my Social Studies class, where I needed to have a 3D model of Israel and the Gaza strip. I plan on reusing this for future assignments as well.


However, it is kind of unfinished. As of posting this, any text in the map will be flipped on the final model, I don't have a way to upload the model to SketchFab (which is what you need in order to embed a 3D model viewer on a website), and a few other quality of life things that I'd like to implement.

But hey, I thought it turned out decently, so here is the repo:

https://github.com/dastarruer/terrain-obj

/r/Python
https://redd.it/1l5p78h

How to efficiently combine Redis-based recommendation scoring with Django QuerySet for paginated feeds?

I'm building a marketplace app and trying to implement a personalized recommendation feed. I have a hybrid architecture question about the best way to handle this:

Current Setup:
- Django backend with PostgreSQL for product data
- Redis for user preferences, actions, and computed recommendation scores
- Celery for background recommendation generation

The Challenge:
I need to serve a paginated feed where the order is determined by Redis-based scoring (user preferences, trending items, etc), but the actual product data comes from Django models.

My Current Approach:
1. Celery task generates ordered list of product IDs based on Redis metrics
2. Cache this ordered list in Redis (e.g., [123, 456, 789, ...])
3. For each page request, slice the cached ID list
4. Use Django's Case/When to maintain the Redis-determined order:


Questions:
1. Is using Case/When with enumerate() the most efficient way to preserve Redis-determined order in Django?
2. Should I be caching the actual product data in Redis instead of just IDs?
3. Any better patterns for this Redis scoring + Django data combination?
4. How do you handle the "cold start" problem when recommendations aren't ready yet?

The feed needs to handle —10k products with real-time scoring updates. Any architecture advice or alternative approaches would be greatly appreciated!

Tech Stack: Django 4.2, Redis, Celery, PostgreSQL, DRF


/r/django
https://redd.it/1l5n3n9

How can I crat a heartbeat type thread in Flask-MQTT

EDIT: crat s/b create

I have a working flask-MQQT app. But I want it to have a background thread always running that can check and react to outside events, such as broker on other machine is disconnected or a GPIO pin is high/low on the host Raspberry Pi.

I just want this thread to work full time and have it's own sleep(n) step. i would like it to be able to call functions in he main program.

Is this possible? Or..... Any suggestions?

/r/flask
https://redd.it/1l5oze2

R Apple Research: The Illusion of Thinking: Understanding the Strengths and Limitations of Reasoning Models via the Lens of Problem Complexity

Abstract:

>Recent generations of frontier language models have introduced Large Reasoning Models (LRMs) that generate detailed thinking processes before providing answers. While these models demonstrate improved performance on reasoning benchmarks, their fundamental capabilities, scal ing properties, and limitations remain insufficiently understood. Current evaluations primarily fo cus on established mathematical and coding benchmarks, emphasizing final answer accuracy. How ever, this evaluation paradigm often suffers from data contamination and does not provide insights into the reasoning traces’ structure and quality. In this work, we systematically investigate these gaps with the help of controllable puzzle environments that allow precise manipulation of composi tional complexity while maintaining consistent logical structures. This setup enables the analysis of not only final answers but also the internal reasoning traces, offering insights into how LRMs “think”. Through extensive experimentation across diverse puzzles, we show that frontier LRMs face a complete accuracy collapse beyond certain complexities. Moreover, they exhibit a counter intuitive scaling limit: their reasoning effort increases with problem complexity up to a point, then declines despite having an adequate token budget. By comparing LRMs with their standard LLM counterparts under equivalent inference compute, we identify three performance regimes: (1) low complexity tasks where standard models surprisingly outperform LRMs,

/r/MachineLearning
https://redd.it/1l5hzhs

Python on tablet?

I have damaged my laptops hard disk and difficult to operate it in a remote area as there are no repair shops nearby. But i need to learn programming and dsa in 2 months. Can I code on my laptop? Any online softwares for it?

/r/Python
https://redd.it/1l5tscy

Sunday Daily Thread: What's everyone working on this week?

# Weekly Thread: What's Everyone Working On This Week? 🛠️

Hello /r/Python! It's time to share what you've been working on! Whether it's a work-in-progress, a completed masterpiece, or just a rough idea, let us know what you're up to!

## How it Works:

1. Show & Tell: Share your current projects, completed works, or future ideas.
2. Discuss: Get feedback, find collaborators, or just chat about your project.
3. Inspire: Your project might inspire someone else, just as you might get inspired here.

## Guidelines:

Feel free to include as many details as you'd like. Code snippets, screenshots, and links are all welcome.
Whether it's your job, your hobby, or your passion project, all Python-related work is welcome here.

## Example Shares:

1. Machine Learning Model: Working on a ML model to predict stock prices. Just cracked a 90% accuracy rate!
2. Web Scraping: Built a script to scrape and analyze news articles. It's helped me understand media bias better.
3. Automation: Automated my home lighting with Python and Raspberry Pi. My life has never been easier!

Let's build and grow together! Share your journey and learn from others. Happy coding! 🌟

/r/Python
https://redd.it/1l5yvhd

Globally Disable Foreign Keys in Django
https://www.pixelstech.net/article/1749100094-globally-disable-foreign-keys-in-django

/r/django
https://redd.it/1l61suh

Audited SSS (shamir shared secret) code?

I’m currently looking for audited implementations of Shamir’s Secret Sharing (SSS). I recall coming across a dual-audited Java library on GitHub some time ago, but unfortunately, I can’t seem to locate it again.

Are there any audited Python implementations of SSS available? I've searched extensively but haven't been able to find any.

Can anyone found some? I'm thinking about: https://github.com/konidev20/pyshamir but I don't know.

/r/Python
https://redd.it/1l5xtz5

Django CSS Production not loading

Refused to apply style from because its MIME type ('text/html') is not a supported stylesheet MIME

settings.py

BASEDIR = Path(file).resolve().parent.parent

STATICURL = '/static/'
STATICROOT = BASEDIR / 'staticfiles'
STATICFILESDIRS = [
    BASEDIR / 'myapp' / 'static',
]

base.html

<link rel="stylesheet" href="{% static 'styles.css' %}" />

I also am running

python manage.py collectstatic --noinput

So when I am in production its picking up nothing in my static folder I'm so confused help please!

/r/django
https://redd.it/1l5vhcs

Help Django ModuleNotFoundError when deploying to Render

I'm struggling with a deployment issue on Render with my Django project.I'm struggling with a deployment issue on Render with my Django project. When deploying, I get
ModuleNotFoundError: No module named 'accounts'
Project Structure:
portfolio_app/
└── django_portfolio_app/
├── portfolio_app/
│ ├── __init__.py
│ ├── settings.py
│ ├── urls.py
│ └── wsgi.py
├── accounts/
├── projects/
├── resume/
├── forum/
├── theme/
│ └── static/
└── manage.py
I did specify in the render deployment settings that django_portfolio_app is the root directory. No idea where to go from now on, as I'm stuck on this error since yesterday. Thanks for any advice and feedback

/r/django
https://redd.it/1l5t4wr

Project RCPTelegram – A Telegram Bot to Remotely Control Remotely your PC

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Project RCPTelegram – A Telegram Bot to Remotely Control Your PC (Webcam, Screen, Keylogger, Pranks & More)


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🔧 What My Project Does

RCPTelegram is a Telegram bot that lets you remotely control your PC via chat commands. Some of the features include:

📸 Streaming your webcam and screen (via ngrok tunnels)

🖼️ Taking screenshots and webcam photos

⌨️ Keylogger

📶 Getting saved Wi-Fi passwords

🌍 Grabbing your public IP

🔊 Setting volume and managing output devices

🎭 Pranks and other fun tools

🔩 Many system automation commands (power, sleep, lock, etc.)


All features are accessible from a single Telegram chat — no GUI needed.


---

🎯 Target Audience

This is not meant for production — it's a toy/educational project designed to explore remote PC control using Python and Telegram. It’s great for learning purposes, automation experiments, or building your own personal remote assistant.


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⚖️ Comparison to Existing Tools

Unlike commercial tools like TeamViewer or AnyDesk:

🟢 This works headlessly via Telegram

🛠️ Fully scriptable and open-source

🔌 Uses ngrok for quick and easy tunneling

🎉 Has playful features (like pranks) you won’t find in standard tools

🧩 You can modify and extend it however you like



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🗂️ Links

Bot Code: https://github.com/RiccardoZappitelli/RCPTelegram

GUI Builder: https://github.com/RiccardoZappitelli/RCPTMaker



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Let me know what features you’d add or how you'd improve it. I’m also planning to split the code into multiple

/r/Python
https://redd.it/1l69934

Django tip Component-Based Design With Django Cotton

/r/django
https://redd.it/1l6f2f3

Anyone successfully hosted on Plannethoster?

Trying to host my first Django/HTML project on Plannethoster as I'm with them for other projects, so thought how hard can it be 😵‍💫

Now I've read though the docs on the site about python and Django project, but I seem to be missing something or they have changed something 🤷 an their support support are not very helpful with it.

From what I've read you need to create the python app and navigate to via terminal, then in stall Django and a Django app, or instead of the Django app you upload you own.

But there's nothing on does it need to be in the app folder you created for the python app before, or can it be in a subfolder? Do I have to upload from their file manager or can I do it from git?

I'm sure there's more questions after this as it seems very convoluted in the setting up.

Thanks for your help and your time, if you have any knowledge on this.

/r/django
https://redd.it/1l69zp9

🎬 MovieHit.online - A Django-powered movie discovery web app I built

https://redd.it/1l6j2rs
@pythondaily