What was for you the biggest thing that happened in the Python ecosystem in 2023?

Of course, there was Python 3.12, but I'm not only talking about version releases or libraries but also about projects that got big this year, events, etc...


EDIT : so nobody cared about pandas 2, mojo or python in Excel ?

/r/Python
https://redd.it/188fo2w

Untyped Python: The Python That Was
http://lucumr.pocoo.org/2023/12/1/the-python-that-was

/r/Python
https://redd.it/188eiud

dotenv or config.json

I know both will work, but is it better to access your environment variables (SECRET_KEY, EMAIL_USERNAME, etc) using load_dotenv() or json.load(config_file)? In both cases the variables are being imported from outside the website's folder structure, but is one approach inherently safer than the other? If so, please explain why.

/r/flask
https://redd.it/188ww9f

How to use Flask with SQLAlchemy Core functions?

I found that SQLAlchemy ORM is not what I need, but AFAIK the Flask-SQLAlchemy module is an ORM based one. How can I use SQLAlchemy with Flask without ORM? Is it enough to setup/configure a SQLAlchemy object at the start of app:

db = SQLAlchemy(app)

then get a connection object from it:

conn = db.engine.connect()

and then use it if it was made by the original (non-flask) sqlalchemy?


/r/flask
https://redd.it/187qyzq

2,000 free sign ups available for the "Automate the Boring Stuff with Python" online course. (Dec 2023)

If you want to learn to code, I've released 2,000 free sign ups for my course following my Automate the Boring Stuff with Python book (each has 1,000 sign ups, use the other one if one is sold out):

https://udemy.com/course/automate/?couponCode=DEC2023FREE

https://udemy.com/course/automate/?couponCode=DEC2023FREE2

If you are reading this after the sign ups are used up, you can always find the first 15 of the course's 50 videos are free on YouTube if you want to preview them. YOU CAN ALSO WATCH THE VIDEOS WITHOUT SIGNING UP FOR THE COURSE. All of the videos on the course webpage have "preview" turned on. Scroll down to find and click "Expand All Sections" and then click the preview link. You won't have access to the forums and other materials, but you can watch the videos.

NOTE: Be sure to BUY the course for $0, and not sign up for Udemy's subscription plan. The subscription plan is free for the first seven days and then they charge you. It's selected by default. If you are on a laptop and can't click the BUY checkbox, try shrinking the browser window. Some have reported it works in mobile view.

I'm also working on another Udemy course that follows my recent book "Beyond

/r/Python
https://redd.it/188l3cu

Does Flask-Login 0.7.0 support cookie based authentication? Or is it purely session based? What are the alternatives?

Does Flask-Login 0.7.0 support cookie based authentication? Or is it purely session based? What are the alternatives?

/r/flask
https://redd.it/187iqhp

Flask with UltraJSON

https://pypi.org/project/flask-ujson/

This might be interesting to speed test...

/r/flask
https://redd.it/187o7ju

i feel overwhelmed , should i start learning django from tutorials first or begin by building projects.



/r/django
https://redd.it/188wr45

Flask-login not working after starting program on a different machine? Never matches hash.

I have a program working with Flask-Login for authentication. I have been testing and using it for the last couple of months with no issue with the admin account being able to login and be remembered by the browser.

I now attempt to set up the program from scratch on another machine and I cannot log in even after creating the account.

I have this function:

bcrypt = Bcrypt(app)

def createadminuser(bcryptobj):
password = os.getenv('ADMINPASSWORD')
hashedpw = bcryptobj.generatepasswordhash(password)
if db.session.query(Users).filter(Users.userid == 1).first() is None:
adminuser = Users(
userid=1,
username="admin",
password=hashedpw,
)
db.session.add(adminuser)
db.session.commit()

with app.appcontext():
db.createall('main')
db.createall('config')
createadminuser(bcrypt)

This successfully creates the admin account:

1|admin|$2b$12$3DaNwkdb4rym0r2EMoLR6OCoJj8QpSgcq7gt0yVM9tqGb0HGWNk1a

I have a script to generate the admin password and overwrite the old one if necessary:

if sqlite3 webapp/instance/test.db "SELECT EXISTS(SELECT 1 FROM users WHERE username='admin';"

/r/flask
https://redd.it/186tvxm

My first time selling a website.

It's my first time selling a website, how much should I price it?
All this time and I only hosted my projects on free slow services, but since I'm working a full project then I don't where should I host it for the best experience and how much should I charge for it.
The website is a landing page for a startup, and the whole purpose of it is just to view their services.
No payment services, no actual accounts and stuff. Just 2-5 pages max.
I need advice on how much should I charge for it, where to host it, and some details that I may not be aware of. If anyone can help then that'll be great. Thanks already! (I don't know what to flair my post)

/r/django
https://redd.it/18930in

PGVector operator does not exist: vector <#> numeric

I am using PGvector with Django. While I usually leverage the PGvector ORM functionality, this usecase requires a complex query which I am running in raw sql as shown below. https://gist.github.com/Thehi198/de053c5bc402046f6e36468642681cfb


I get the output shown below when running django, where pgvector does not seem to recognize a list. I have tried converting to a nparray, and explicitly defining a list. I have also run this query in my Postgres console successfully.
Stack
Supabase Postgres: 15.1.0.133
PGvector Postgres: 0.5.1: Running a HNSW index
Django: 4.2.7
OpenAI text-embedding-ada-002: 1536 dim

https://preview.redd.it/9fzeyeogix3c1.png?width=891&format=png&auto=webp&s=1de7f2a4924f4ce188dec9080a256570afd62c14

/r/django
https://redd.it/189agze

DRF - Why is CSRF token cookie not being set, disappears on page reload, and unable to get cookie?

I'm working on a Django / DFR + SvelteKit project and have been struggling for several days on this :(

I am trying to use Django's session-based auth system and csrf tokens which are stored in cookies.

Problems:

1. When the page first loads, there is no csrf token in the cookies, so for testing purposes I added a button to request one from the server. This does add the cookies to the page.
2. After the csrf token cookie is set, if I refresh the page, the cookie disappears and I have to click the "set csrf cookie" again... No clue why this is happening and have not been able to resolve it..
3. When I make the POST request, the csrf token logged out as undefined - and then the csrf cookie disappears - beyond frustrating and don't understand why this is happening.
4. When I make the request without any csrf token, essentially removing the `'X-CSRFToken': csrfToken` header in the request, the Django DRF view still accepts the post... when I explicitly set `authentication_classes = [SessionAuthentication\]` which should only accept POST requests that have valid csrfs....

Looking for any help that I can get.

Github link: https://github.com/SoRobby/DjangoSvelte/tree/main

Run django on port `8054`

&#x200B;

REST and CORS Settings:



/r/django
https://redd.it/189d91t

Help with Auth Tokens from other APIs

Quick overview of what I'm trying to build: User clicks a link, does an Oauth for API 1 is redirected to an Oauth for API 2 and then that is the last interaction the user has. Afterwards a subscription service from API 1 sends information that a record in API 1 has updated. This triggers calling information from API 1 using it go get information from API 2 and then updating the record on API 1 with information gathered from API 2. I'm fairly new to development, but I have all of this working locally using Flask and session[\] variables to store the tokens and use them when re-authenticating and refreshing.

Now that I am getting ready to actually implement this in the real world and not just my local machine I'm not sure what I need to do in order to store these tokens since there will be no user after they authorize my application with both of the other API's and so I obviously can't get them to click authorize since they won't be actively going to a page when I need to call the APIs. Searching has lead to way too many different

/r/flask
https://redd.it/186sd5f

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/189go42

My first large scraping website built using Django

14 months I decided to learn programming. After 10 years as a nurse I needed a change. 3 months ago I built my wife a ecommerce website using Django and learned a ton. Today I launched my first large scraping website using Selenium and BS4. I used redis, celery, and postgres for this project. I use the Appliku SaaS to aide in easy deployment, a Hetzner server, and S3 bucket and CDN for images. I know very little JavaScript so I bought the HTML template off themeforest for like $12. I then manipulated the HTML and inserted the Django portions. I also use HTMX to decrease page reloads. HTMX is used mostly when submitting forms. I had to learn Docker due to needing a customized Dockerfile for selenium. At first I was using Playwright, but could not figure out how to get Playwright to work with the Dockerfile, so I switched to Selenium. One thing I noticed on my ecomm website was the large amount of bots that would sign up to site and send messages through contact form so I added ReCaptcha to help prevent this. I would suggest adding ReCaptcha as it's fairly easy to implement. I built

/r/django
https://redd.it/189e1xh

Just found a library for Rust-style errors in Python

Was dreading having to do try/except for a bunch of stuff and found this Rust-style errors lib: https://github.com/rustedpy/result/

Anyone else converted?

/r/Python
https://redd.it/1897m0y

Sending mail via flask

I am trying to send mail using flask but i keep getting this error

(550, b'User hello@mymail.com has exceeded its 24-hour sending limit. Messages to 5 recipients out of 5 allowed have been sent. Relay quota will reset in 6.47 hours.', 'hello@mymail.com')

Here is my code

app.config"MAIL_SERVER" = "smtp.office365.com"
app.config"MAIL_PORT" = 587
app.config"START_TLS" = False
def sendemailverification(name, email, subid):
"""sending email verification""" expires = datetime.timedelta(minutes=30000) token = createaccesstoken(identity=str(subid), expiresdelta=expires)
msg = Message(
subject=PROJECTNAME, sender=app.config"MAIL_USERNAME", recipients=email
)
msg.html = rendertemplate(
"email-verification.html",
link=REACTROUTE + "/subscriber-changes?token=" + token + "&email=" + email,
email=email,
name=name,
websitename=PROJECTNAME,
reactroute=REACTROUTE,
)
mail.send(msg)
message = MIMEMultipart() message'From' = app.config"MAIL_USERNAME" message'To' = email message'Subject' = "View Changes" message.attach(MIMEText("body of mail", 'plain'))
Connect to the SMTP server
with smtplib.SMTP('smtpout.secureserver.net', 587) as server: server.starttls()
Log in to the server
server.login(app.config"MAIL_USERNAME", app.config"MAIL_PASSWORD")


/r/flask
https://redd.it/186ky1h

Overriding JSON encoder in Flask 3.0, jsonencoder deprecated?

According to the Flask 3.0 release notes:

> jsonencoder and jsondecoder attributes on app and blueprint, and the corresponding json.JSONEncoder and JSONDecoder classes, are removed.


I need to serialize an ObjectID into str within my app, which i used to do via:

class JSONEncoder(json.JSONEncoder):
def default(self, o):
# objectID
if isinstance(o, ObjectId):
return str(o)
# datetime
if isinstance(o, datetime.datetime):
return str(o)

return json.JSONEncoder.default(self, o)

and

app.jsonencoder = JSONEncoder

how are people doing it now?

/r/flask
https://redd.it/1869xe9

Chunks or save()?

I'm a little confused. When saving an uploaded file should I save it using FileSystemStorage( fs.save() ) or should I use chunks? I just want to ensure that I use chunking to save files that are large so that they don't impact performance. But I'm also reading here that files over 2.5MB are streamed to memory by default so does that make chunking obsolete?

/r/django
https://redd.it/189mhur

[P] Diffusion Models from Scratch | DDPM PyTorch Implementation
https://youtube.com/watch?v=vu6eKteJWew&si=4g3BCsoIMhOWmE-K

/r/MachineLearning
https://redd.it/189lqlh