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Daily Python News Question, Tips and Tricks, Best Practices on Python Programming Language Find more reddit channels over at @r_channels
🎉 Introducing dj-announcement-api package 🎉
We're thrilled to announce the release of `dj-announcement-api`, a versatile Django package developed by Lazarus to simplify and optimize the management and distribution of announcements through a robust API.
# Key Features
Full, Optimizable API: Manage announcements programmatically with an API designed for high performance and scalability.
Targeted Announcements: Create detailed, categorized announcements directed at specific user audiences.
Auto-Assign Audiences: Automatically assign users to relevant audiences for seamless, targeted communication.
Scheduling Options: Schedule announcements with customizable publication and expiration dates to deliver information at the right time.
Ideal for modern Django applications with dynamic needs, dj-announcement-api brings flexibility, scalability, and ease of use for any project needing streamlined announcement management. Check it out on PyPI: dj-announcement-api on PyPI Source Code and Docs on GitHub: dj-announcement-api on GitHub
/r/django
https://redd.it/1gch3py
P Shape-restricted regression with neural networks
Some time ago at work we had to enforce that our model learns an increasing function of a feature. For example, the probability of winning an auction as a function of the bid should increase. Recently, I encountered the paper https://arxiv.org/abs/2209.04476 on regression with shape-restricted functions, and wanted to make it a bit more tangible, with actual code that trains such a model.
So it resulted in a blog post: https://alexshtf.github.io/2024/10/14/Shape-Restricted-Models.html
There's also a notebook with the accompanying code: https://github.com/alexshtf/alexshtf.github.io/blob/master/assets/shape\_constrained\_models.ipynb
I used to work on ads quite a lot .So such models seem useful in this industry - predicting the probability of winning an ad auction given the bid. I hope it's also useful elsewhere.
So I hope you'll enjoy it! It's a big 'mathy', but you know, it can't be otherwise.
/r/MachineLearning
https://redd.it/1gcpl03
Every unicode character can be a variable name in globals and locals
Hello. Reading about walrus operator I've seen φ used as a variable. That defied my knowledge (_, a-z, A-Z, 0-9), and I thought "if φ is valid, why 🍆 isn't?".
After a bit of try, I've come up with this.
initial = 127810
for i in range(10):
variable = chr(initial + i)
locals()variable = f"Value of {variable} is {ord(variable)}"
print(locals().get("🍆"))
Getting
Value of 🍆 is 127814
Therefore, 🍆 can be a variable in Python (in globals and locals). But also horizontal tab, backspace, null character, ... can be. Of course, they are not accessible in the code the same way than φ or hello_world, but still it's a nice gimmick. I hope you find it fun and/or useful.
But now the real thing. In this context, do you know if using backspace or null as a variable in globals could break the program in execution time? Thank you.
/r/Python
https://redd.it/1gc2gmg
datamule: download, parse, and construct structured datasets from SEC filings
Link: https://github.com/john-friedman/datamule-python
# What my project does
1. Download SEC filings quickly. (Bulk downloads are also available, benchmark is \~2 min/year for every 10-K/10-Q since 2001
2. Parse SEC filings quickly. (Currently only 8-K, 13F-HR Information tables are implemented. 10-K/10-Q coming next week)
3. Convert SEC textual filings directly into structured datasets.
4. Watch for new filings.
5. Has a basic tool calling chatbot with artifacts. Doesn't do anything useful yet, but was fun to make.
# Target Audience
Grad students looking to save money on expensive datasets, quants with side projects, software engineers looking to build commercial projects, and WSB people trying fun new trading strategies. In the future I'd like to make the chatbot code a bit cleaner so it can be used as a tutorial project for masters students w/ finance but not programming experience.
# Comparison
Getting SEC data in bulk is surprisingly expensive. Parsed SEC data is even more expensive. Derived datasets such as board of directors data is also expensive (something like 35k/license).
# Contribution
Greatly appreciated. Also SEC feature requests + QoL suggestions are very useful.
Links: https://github.com/john-friedman/datamule-python
/r/Python
https://redd.it/1gc7yac
Migrating to Django 5
https://jmduke.com/posts/post/django-5/
/r/django
https://redd.it/1gcgqga
Project Open source video indexing/labelling/tag generation tool.
Guys, I'm looking for an open source tool or any repo that can help me generate tags for video to categorize multiple videos and do further analysis.
An equivalent of what I want is Azure AI clvideo inxer, but If there was such a open source tool, it will solve the problem.
/r/MachineLearning
https://redd.it/1gccyhp
How do I solve this circular import error between two models ?
Here's a simplified to the maximum version of my code:
from app2.models import Model2
class Model1(models.Model):
model2 = models.OneToOneField(Model2, ondelete=models.CASCADE, null=True)
# In another app
from app1.models import Model1
class Model2(models.Model):
field1 = models.CharField(maxlength=90)
def save(self):
super().save()
objectmodel1 = Model1.objects.filter()
# Process on objectmodel1
In there, there are two models. One in each of two apps. Model1 needs to import Model2 to define a One To One relationship and Model2 needs to import Model1 because it needs to use it in its save method hence the circular import error I get. I could import Model1 in the save method of Model2 directly but I've read it is not recommended for multiple understandable reasons.
I also heard I could put the name of the model "Model2" in
/r/djangolearning
https://redd.it/1gcbct4
Saturday Daily Thread: Resource Request and Sharing! Daily Thread
# Weekly Thread: Resource Request and Sharing 📚
Stumbled upon a useful Python resource? Or are you looking for a guide on a specific topic? Welcome to the Resource Request and Sharing thread!
## How it Works:
1. Request: Can't find a resource on a particular topic? Ask here!
2. Share: Found something useful? Share it with the community.
3. Review: Give or get opinions on Python resources you've used.
## Guidelines:
Please include the type of resource (e.g., book, video, article) and the topic.
Always be respectful when reviewing someone else's shared resource.
## Example Shares:
1. Book: "Fluent Python" \- Great for understanding Pythonic idioms.
2. Video: Python Data Structures \- Excellent overview of Python's built-in data structures.
3. Article: Understanding Python Decorators \- A deep dive into decorators.
## Example Requests:
1. Looking for: Video tutorials on web scraping with Python.
2. Need: Book recommendations for Python machine learning.
Share the knowledge, enrich the community. Happy learning! 🌟
/r/Python
https://redd.it/1gc8ekm
Pixel-map: A Python CLI tool for plotting geo files in the terminal
# What My Project Does
[**Pixel-map**](https://github.com/RaczeQ/pixel-map) displays geo data in the terminal. It can be used to quickly look into the geospatial data without opening generating HTML maps or using tools like [kepler.gl](https://kepler.gl/).
GitHub: [https://github.com/RaczeQ/pixel-map](https://github.com/RaczeQ/pixel-map)
PyPI: [https://pypi.org/project/pixel-map/](https://pypi.org/project/pixel-map/)
Since I can't embed images in this post, I can only show you the Black and White modes of the library.
ASCII renderer `ascii-bw`:
$ pixel-map arc-de-triomphe.parquet -r ascii-bw --width 82 --height 43 --no-bg
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━ arc-de-triomphe.parquet ━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃ ┃
┃ ┃
┃ @@L_ jr
/r/Python
https://redd.it/1gc3a1k
Posting 2 - the HTTP client TUI, now supports Python scripting, custom keymaps, and more!
Hello r/Python
I'm excited to share Posting 2 with you all!
# What My Project Does
Posting is a terminal based app for interacting with HTTP APIs. It's a bit like Postman, Insomnia, Bruno, etc.
Posting is a snappy and keyboard-centric UI, built for power users but still approachable for those who aren't familiar with terminal apps.
You can build up requests using the UI, send them and interact with the response, and save the requests to disk as simple YAML files for easy sharing, version control, and re-use.
Posting offers efficient "jump mode" navigation which allows you to jump across the UI quickly with the keyboard, extensive autocompletion, themes, integration with other tools (e.g. quickly swap into Vim to edit a request body and swap back), and a bunch more quality-of-life features to let you move fast.
It's written entirely in Python using the Textual framework, and also uses great Python tools like httpx and Pydantic.
With the new release of version 2, you can now run Python code before and after requests! This lets you perform setup and teardown (e.g. logging, setting variables, tokens, etc.).
This version also introduces the (frequently requested) ability to change your keymap for a variety of actions. This will hopefully prevent keybind
/r/Python
https://redd.it/1gc0tiu
[R] Breaking the Memory Barrier: Near Infinite Batch Size Scaling for Contrastive Loss
https://arxiv.org/abs/2410.17243
/r/MachineLearning
https://redd.it/1gbvapp
Help Needed: Scaling My RAG-Based LLM Browser Extension
Hi everyone,
I've developed a browser extension using a Retrieval-Augmented Generation (RAG) model that works great with PDF files stored locally on my machine, with server running on flask. Now, I’m looking to scale this solution for broader use and could really use some advice from experts here as I’m new to deployment.
Here are my key questions:
1. Secured Authorization System: What’s the best approach to create a secure authorization system that adheres to modern security standards?
2. Secure Data Storage: I plan to let users upload their data (primarily PDFs for now). This data needs to be encrypted and protected against security threats. What’s the recommended way to store this data securely while keeping these threats in mind?
3. Affordable LLM Service: (Not a priority but still relevant) Right now, I’m using the gemini-1.5-flash API with my own key. I’m looking for suggestions on any free or low-cost LLM services I can use at scale.
Any insights, advice, or pointers would be greatly appreciated! Thanks in advance!
/r/flask
https://redd.it/1gav6h7
Manim : package for maths animation
I recently explored Manim, an open-sourced python package for generating animated videos for explaining maths. It includes animations for shapes, equations, codes, graphs, etc. The repo is trending on GitHub as well. The demo also looks very impressive. Check it out here : https://youtu.be/QciJxVjF4M4?si=Bk_gU4Tj5f6gPpiq
/r/Python
https://redd.it/1gbldgk
Ethics concerns and Google D
Apologies if this isn't the right place for this facet of ML, but it didn't seem against the rules.
I recently participated in an Alphabet human data research study used to evaluate AI agents and models.
Without going further into the details, the structure of the study felt very ethically questionable. The agreement said if there were any concerns, to contact HuBREC, human behavioural research ethics committee.
However, their email provided in the agreement hubrec@google.com does not exist and I have no point of contact at all short of looking up past academic talks and cold emailing people.
I am having a lot of difficulty searching for next steps as there is no other contact information I can use except for that email. I do know that Google has fired AI ethics researchers in recent memory, and that this topic never seems to be taken seriously. It seems like a bad look for an on-going study to point you to a committee that doesn't seem to exist.
/r/MachineLearning
https://redd.it/1gbblsc
Friday Daily Thread: r/Python Meta and Free-Talk Fridays
# Weekly Thread: Meta Discussions and Free Talk Friday 🎙️
Welcome to Free Talk Friday on /r/Python! This is the place to discuss the r/Python community (meta discussions), Python news, projects, or anything else Python-related!
## How it Works:
1. Open Mic: Share your thoughts, questions, or anything you'd like related to Python or the community.
2. Community Pulse: Discuss what you feel is working well or what could be improved in the /r/python community.
3. News & Updates: Keep up-to-date with the latest in Python and share any news you find interesting.
## Guidelines:
All topics should be related to Python or the /r/python community.
Be respectful and follow Reddit's Code of Conduct.
## Example Topics:
1. New Python Release: What do you think about the new features in Python 3.11?
2. Community Events: Any Python meetups or webinars coming up?
3. Learning Resources: Found a great Python tutorial? Share it here!
4. Job Market: How has Python impacted your career?
5. Hot Takes: Got a controversial Python opinion? Let's hear it!
6. Community Ideas: Something you'd like to see us do? tell us.
Let's keep the conversation going. Happy discussing! 🌟
/r/Python
https://redd.it/1gbh5k3
Why my Django Administration page looks like this
https://preview.redd.it/zq6i8sq825xd1.png?width=1920&format=png&auto=webp&s=accd043c3df996c0e52d4a4f380ff86063c72cab
/r/django
https://redd.it/1gcqq5d
Hosting my Flask application - selecting a provider?
I'm currently looking to host my Flask application that is completely finished and just needs to go online, but as it is my first project that is actually going online I'm looking for some guidance with selecting a provider.
The app is a statistics application that I built for a company. It's a fairly basic Flask application with upwards of 8 .py scripts, a .json dataset and and some web templates, images and .css files. Everything is running smoothly and perfectly on the built-in development server, so I'm hoping it will continue to do so once hosted properly.
Security is a concern (if that matters when it comes to selecting the provider) as the application uses developer keys and some other credentials (that I've done all I can to secure within the app itself). I will need to install a log-in system of some sort so if any provider can make that easy that would be a major advantage.
Hoping for some pointers or just to hear some experiences with different providers - and thanks in advance :-)
T
/r/flask
https://redd.it/1gay069
I created a Django rest framework package for MFA/2FA
I'm excited to announce the release of drf-totp, a package that brings Time-Based One-Time Password (TOTP) Multi-Factor Authentication (MFA) to the Django Rest Framework.
What My Project Does
drf-totp provides a simple and secure way to add an extra layer of authentication to your API endpoints, protecting your users' accounts from unauthorized access. With this package, you can easily integrate TOTP MFA into your Django Rest Framework project, supporting popular authenticator apps like Google Authenticator and Authy.
Key Features
1. Easy integration with Django Rest Framework
2. Supports popular authenticator apps like Google Authenticator and Authy
Target Audience
drf-totp is designed for developers and teams building secure API-based applications with Django Rest Framework. This package is suitable for production environments and can be used to add an extra layer of security to existing projects or new applications.
Comparison
While there are other MFA solutions available for Django, drf-totp is specifically designed for the Django Rest Framework and provides a seamless integration experience. Unlike other solutions that may require extensive configuration or customization, drf-totp is easy to set up and use, making it an ideal choice for developers who want to add TOTP MFA to their API endpoints quickly and securely.
Check out the GitHub repo for installation instructions and example
/r/Python
https://redd.it/1gcl0hk
A fun use of itertools in gamedev
For the last 3/4 years I've been working on this game in Python/Pygame
There's a lot of puzzling mechanics and tight movements required which got me to thinking of some hazards I could put in the game.
Anyway, fast forward a bit and I have one particular hazard which you can see here:
https://i.imgur.com/swY30rB.mp4
If that hurts your head, there's a simpler "up/down" version here
https://i.imgur.com/yE7LZGa.gif
While doing these I realised it was just cycling (a very obvious clue) through a list of different vectors. Which brought me to my favourite but often-unused module... itertools!
### itertools.cycle to the rescue!
When I saw this pattern I realised I could finally indulge myself and use itertools.cycle. I love the itertools modules but usually never get to use them in my day-to-day.
For those not in the know, itertools.cycle describes itself as this (paraphrased for brevity)
> Make an iterator returning elements from the iterable. Repeats indefinitely
In the first example we're just cycling through a version of a circle
[1,0, # right
0, 1, # down
-1,0, # left
0, -1
/r/Python
https://redd.it/1gch0qm
Help🫠😭 my cloud teacher is draining me.
https://redd.it/1gbs5km
@pythondaily
Build a 'Chat with Wikipedia' App Using Flask and Gemini API (Demo + Code)
Hey Community,
I’m excited to share how quick and easy it is to bring your apps and ideas to life using Flask—the learning curve is really user-friendly! I recently built a "Chat with Wikipedia" app using Flask, powered by the Gemini API.
You can check out a demo on my YouTube channel (link provided in the video description), where you’ll also find the code.
Here’s a quick overview: this app lets you enter a Wikipedia page title and chat with the page to ask questions about it.
Next on my list is to develop a Chrome extension to extend this concept, making it possible to chat with any website directly.
Let me know what you think!
https://www.youtube.com/watch?v=1mxTvmpDV-I
/r/flask
https://redd.it/1gbrfs2
one year of peer review D
My manuscript has been in peer review for 10 and half months to ieee. The last time I contacted the journal to ask about the situation, they told me that they were looking for reviewers. It's been two months since the last email. I have no response from the journal. The manuscript is still in peer review. My question is, is it normal for it to take so long? Is this a good sign that my paper will be accepted? If it were the opposite, would they not hesitate to reject it directly or is it normal for it to take so long and then reject it in the end? The paper is about natural language peocessing
/r/MachineLearning
https://redd.it/1gbzxbf
Anyone working on or with a great but little-known test framework?
If you're developing or enjoying a less popular testing framework with Python, I'd love to hear about it!
I don't love pytest, some of its complexities, tall decorator stacks, and function naming conventions.
I do love ward, with its unusual non-function-naming test names, and unusual defining-functions-in-loops for parameterization. Unfortunately it's now archived, as the developer is busy at Textualize.
Maintaining it myself is probably beyond my abilities and bandwidth, so I plan to migrate some projects to pytest soon, but wanted to check if anyone can show off some fun alternative with something special to offer.
Thanks for any contribution!
/r/Python
https://redd.it/1gbxrho
Webapp hosting resources
I going develop a webapp in django that can to post image and text. Get registion form data from user. Now don't know how much Hosting resource like cpu, ram, bandwidth for 100 to 500 user . Also tell some free and paid webapp Hosting service in low cost for startup
/r/djangolearning
https://redd.it/1gc1xh0
Single line turns the dataclass into a GUI/TUI & CLI application
I've been annoyed for years of the overhead you get when building a user interface. It's easy to write a useful script but to put there CLI flags or a GUI window adds too much code. I've been crawling many times to find a library that handles this without burying me under tons of tutorials.
Last six months I spent doing research and developing a project that requires low to none skills to produce a full app out of nowhere. Unlike alternatives, mininterface requires almost nothing, no code modification at all, no learning. Just use a standard dataclass (or a pydantic model, attrs) to store the configuration and you get (1) CLI / config file parsing and (2) useful dialogs to be used in your app.
I've used this already for several projects in my company and I promise I won't release a new Python project without this ever again. I published it only last month and have presented it on two conferences so far – it's still new. If you are a developer, you are the target audience. What do you think, is the interface intuitive enough? Should I rename a method or something now while the project is still a
/r/Python
https://redd.it/1gbprvv
This is now valid syntax in Python 3.13!
There are a [few changes that didn't get much attention](https://www.bitecode.dev/p/python-313-what-didnt-make-the-headlines) in the last releases, and one of them is that comprehensions and lambdas can now be used in annotations (the place where you put type hints).
As the article mentions, this came from a bug tickets that requested this to work:
class name_2[*name_5, name_3: int]:
(name_3 := name_4)
class name_4[name_5: name_5]((name_4 for name_5 in name_0 if name_3), name_2 if name_3 else name_0):
pass
Here we have a walrus, unpacking, type vars and a comprehension all in one. I tried it in 3.13 (you gotta create a few variables), and yes, it is now valid syntax.
I don't think I have any use for it (except the typevar, it's pretty sweet), but I pity the person that will have to read that one day in a real code base :)
/r/Python
https://redd.it/1gbu1g0
PyGenTree: A Simple Yet Powerful Python Package for Generating ASCII Directory Trees
# What My Project Does
PyGenTree is a Python package that generates ASCII tree representations of directory structures. It's a simple command-line tool that allows you to visualize the structure of your project or any directory on your system. With PyGenTree, you can easily document your project's structure, quickly understand unfamiliar codebases, or generate directory trees for README files.
# Target Audience
PyGenTree is designed for developers, programmers, and anyone who works with directory structures on a regular basis. It's a useful tool for:
* Developers who want to document their project's structure
* Programmers who need to quickly understand unfamiliar codebases
* DevOps teams who want to visualize directory structures for deployment or debugging purposes
* Anyone who wants to generate directory trees for README files or documentation purposes
# Comparison
There are existing tools that generate directory trees, such as `tree` on Linux and `dir` on Windows. There are online ASCII Tree Generators where you have to manually add files and directories. There are some python packages similar to this, but I tried to combine all the useful features from these alternatives and create this one. PyGenTree differs from these alternatives in several ways:
* **Cross-platform compatibility**: PyGenTree works on Windows, macOS, and Linux, making it a great
/r/Python
https://redd.it/1gbnnbu
need help for django with aws s3 bucket
i have a website with backend django (digital ocean ) (dockerize the app )hosted in the backend and vite react project in s3 bucket i keep getting this error , I'm sure settings,py file is correct, i tried all of
CORSALLOWEDORIGINS =
'http://myappsfrontends.s3-website-us-east-1.amazonaws.com',
ALLOWEDHOSTS = ['*']
CORSORIGINALLOWALL = True
and setup the cors middleware in the right order
i spent week searching all of stackoverflow and reddit for solutions and nothing works, so this is the last solution
(i'm using aws just to learn some cloud to increase my skills )
cors policy in aws
[
{
"AllowedHeaders": [
"*"
\],
"AllowedMethods": [
"GET",
"PUT",
"POST",
"DELETE"
\],
"AllowedOrigins": [
"http://myappsfrontends.s3-website-us-east-1.amazonaws.com"
\],
"ExposeHeaders": [
"Content-Range",
"Content-Length",
"ETag"
\],
"MaxAgeSeconds": 3000
}
\]
https://preview.redd.it/hfa5s7c3mrwd1.png?width=1887&format=png&auto=webp&s=739741d0e97e6c6ed2123e09e04616f5d5c1d517
/r/djangolearning
https://redd.it/1gbcw7e
How do Session IDs work?
New to Flask. What I know is there are 2 ways to implement sessions: client-side and server-side. The former uses the default flask session (from flask import session) while the later uses a library called Flask-Session (need to add from flask_session import Session) .
I read both flask and Flask-Session docs, I still can't wrap my head around how sessions really work. The default session will turn your session data dict into cookie, then salt it, add signature, encode in base64. The Flask-Session's session still uses cookie, but it only contains the session identifier.
Session identifier is for identifying users, duh. But I have some questions:
1. Since Flask-Session is just extension of the deault session, do both of them implement the same approach to assigning session ID?
2. Where can I find the session IDs of the users?
3. Is it going to reset after closing the tab? browser?
4. When I do session.clear(), is everything cleared, including the session ID?
Again, sorry for asking these dumb questions. Any help would be appreciated. Thanks!
/r/flask
https://redd.it/1gb6kzq
Personal portfolio
Finally fixed my mobile menu! Really excited about how this is coming along... In the resources section I have a ecomm template but let me know if anyone want this portfolio template in that section so I can add it. More feedback welcome!
thanks in advanced Reddit people!
https://silverboi.me
/r/flask
https://redd.it/1gb664l
