Issues with Pydantic

I've been experimenting with a few Django-related libraries and they all seem to encounter the same problem:

>pydantic.errors.PydanticSchemaGenerationError: Unable to generate pydantic-core schema for <class 'function'>. Set \\arbitrary\_types\_allowed=True\\ in the model\_config to ignore this error or implement \`\_\_get\_pydantic\_core\_schema\_\_\` on your type to fully support it.\`\`
>
>If you got this error by calling handler(<some type>) within \\\_\_get\_pydantic\_core\_schema\_\_\\ then you likely need to call \`handler.generate\_schema(<some type>)\` since we do not call \`\_\_get\_pydantic\_core\_schema\_\_\` on \`<some type>\` otherwise to avoid infinite recursion.\`\`

The issue occured often when I'm trying to run code that's coming directly from their tutorials, so I'm confused as to whether something changes in Pydantic that's causing these libraries to fail. In this case, I'm testing the `django-ninja` code that appears in their tutorial on `auth` (here):

https://preview.redd.it/06ca60ptsm3c1.png?width=845&format=png&auto=webp&s=60c97d63e8721d4a72e02668165ade278a87c718

/r/django
https://redd.it/1885jie

I made YouTube in Python

https://www.youtube.com/watch?v=GA0621y0zUQ

&#x200B;

Youtube clone with

1. Views
2. Likes
3. Dislikes
4. Comment
5. Multiple channels under same user
6. Subscribers

/r/Python
https://redd.it/188aa4r

the eval game

https://oskaerik.github.io/theevalgame/

I made a Python game inspired by "The Password Game", highlighting some of the more obscure aspects of the language. Give it a try and test your skills (or maybe creativity...) 😉

I'm happy to receive any feedback!

/r/Python
https://redd.it/1884j69

D I'm interviewing Rich Sutton in a week, what should I ask him?

Rich is an author of the RL book, and more recently, he founded the OpenMind Research Institute with some colleagues.

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The interview is in 1 week. I have a background in RL and already have some ideas on questions and topics, but I also want to source questions outside of the Alberta RL bubble. Technical questions are the best, though I am open to anything. Thank you!

&#x200B;

I'll post an update in this thread in a couple weeks after the interview is published.

/r/MachineLearning
https://redd.it/187nbv8

Server Error (500) in Production of a Django App on Render.com

I am trying to deploy a Django Application on Render.

In my project, I have some number of apps that have their own urls.py file. Then, in the project's url, I included them. Have a look at the project's url:

urlpatterns =
path('admin/', admin.site.urls),
path('', include('home.urls')),
path('about/', include('about.urls')),
path('kbdash/', include('management.urls')),


And for every app the url looks like this:

urlpatterns =
path('', about_page, name='about'),


all these urls work except for the

path('kbdash/', include('management.urls'))

Below is the urls.py of management app:


urlpatterns =
path('', views.Dashboard.as_view(), name='dashboard'),
path('fuels/', views.fuel_list_view, name='fuel_list'),


all the urls in main urls file are working except for the kbdash/

Visiting kbdash/ and any link under kbdash/ throw Server Error (500)

View associated with kbdash/ :

class Dashboard(LoginRequiredMixin, generic.View):


/r/django
https://redd.it/1888vns

How deploy a Django app?

I'm very close to finish my django project and I'm worried about the deploy. So far, I have an EC2 instance in AWS and even tough it's "online", it's just the EC2 running "python3 manage.py runserver" all the time.

I know this is not the best way, so I wanted to ask you guys:

\-How should I manage my Media/Static files?

\-How should I manage the DB?

\-How should I keep running the app?

\-How can I keep my code updated with my repo in github?

I'm pretty newbie in this deployment field, so I'll appreciate your help and comments :D

/r/django
https://redd.it/188g1k8

django-unfold charts

Does anyone know what charts Django-Unfold uses? I love how they look!

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

PyCharm docker-compose interpreter in WSL

Hey everyone! New coder here.

Building my first web app, I started out with venv in WSL. That worked great for the first 2 months but I've since brought Celery, Mailpit, Redis, and Flower into the equation, which made it very tedious to manage everything manually, so I learned Docker and dockerized my app (I now love Docker, btw :D).

For development, I use Docker Desktop with the WSL-based engine and everything's fine except that I can't configure the Python interpreter in PyCharm to use docker-compose in WSL. The functionality is there but after hooking it all up, it fails with the following errors:

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https://preview.redd.it/trw2ktsfop3c1.png?width=737&format=png&auto=webp&s=251bff65b32721112c177bfa7ca77d218d0b81c4

&#x200B;

https://preview.redd.it/rnayo0ogop3c1.png?width=724&format=png&auto=webp&s=f6ab88afdd27150dcd95312beab1eb604b1dfd19

Over the past 3 days, I've tried reinstalling WSL, Docker Desktop, multiple versions of PyCharm Pro, and seemingly anything in between to no avail.

My question is, has anyone successfully managed to use a Python interpreter hooked to a docker-compose in WSL in PyCharm? I really like PyCharm, but without the above, I can't use the debugger, so I'd probably try running the same setup on native Ubuntu on dual-boot or move to VS Code.

/r/django
https://redd.it/188gb9e

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