no able to log-in after migration

hey guys, i have a doubt...

i am building a signup-login form, with user, admin, and a manager

I am using Werkzeug to hash password.

2 tables in use are:

1) Employees (consisting of admins and employees)

2) Users

now let's say, an admin logs in.

Admin changes manager's role to an user's.

I then restart the server (in order to migrate manager from Employee table to user's table)

now when I am logging in with the managers credentials, the hashed password isn't been read, and i can't log in. Whats with this error?


if i am migrating employee's password to user's password (even if as a script), shouldn't it read the hashed password using check_password_hash?


what else can i do?

/r/flask
https://redd.it/1e9aa14

What is the safest way to secure env variables?

Is it OK if I create a separate service with independent database and store everything there and call it via api?

Or is there any other approach that has more potential for keeping it safe?

Asking because my vps is constantly getting attacked with ssh bruteforce bots. I have banned more than 1800 IP addresses so far but they are not fudging.

/r/django
https://redd.it/1e99rea

Defining a Custom Unknown Type in Python

I wrote up a short blog post based on an interesting workaround mentioned in this StackOverflow post for simulating an unknown type in Python.

If you have a better solution, feel free to share it!

/r/Python
https://redd.it/1e942fx

What are people's experience with Celery?

I thought I had a good use case for Celery but I found myself struggling and getting nowhere with it after several hours even to get a basic setup working. I eventually went back to using Cron jobs. Has anyone else got a basic example of a simple working project with Django using Celery? I had a devil of a time getting even a very simple example to work with it apparently not being able to find my celery.py file or complain about circular imports. I say apparently because it doesn't show errors to that effect but it appears not to execute that file. I am just after a basic minimal getting started example. I spent hours on this and got nowhere.

Are people still using Celery for new projects or something else?

/r/djangolearning
https://redd.it/1e8db7t

Mypy 1.11 Released

https://mypy-lang.blogspot.com/2024/07/mypy-111-released.html

Features include:

Support Python 3.12 Syntax for Generics (PEP 695)
Support for functools.partial
Stricter Checks for Untyped Overrides
Type Inference Improvements
Improvements to Detection of Overlapping Overloads
Better Support for Type Hints in Expressions
Mypyc Improvements
etc.

/r/Python
https://redd.it/1e9fh4r

Unable to create .db file with flask SQLAlchemy

I am trying to create a .db file where the login and signup details of the user will be stored, but i am unable to. Here is my __init__.py file:

from flask import Flask
from flasksqlalchemy import SQLAlchemy
from flasklogin import LoginManager
from app.models import DBNAME
from app.models import User, ElderlyUser, Volunteer

db = SQLAlchemy()
loginmanager = LoginManager()
loginmanager.loginview = 'main.login'

def createapp():
app = Flask(name)
app.config['SECRETKEY'] = 'secretkey'
app.config['SQLALCHEMYDATABASEURI'] = f'sqlite:///{DBNAME}'

db.initapp(app)
loginmanager.initapp(app)

from app.routes import main
app.registerblueprint(main)

return app

@loginmanager.userloader


/r/flask
https://redd.it/1e9gmg8

CSRF not being sent when in Xframe

My application runs smoothly when working through my own url, including logging in and other form activities. However, when x-frame’d in another site, I run into csrf verification issues and get the 403 forbidden when sending forms. In the dev tools, I can see that no request cookies are being sent, however, my csrf token and 4 other cookies are included in the ‘filtered out request cookies’ section of the cookies tab, so it appears for some reason they just aren't being passed. I have the below values set in my settings. Note that I have tried setting my cookie secure settings to False just to see if procore’s x-frame was maybe operating in a non-HTTPS manner, however, that did nothing to change the issue.

I have done the following to try and fix this: 1) changed the CSRF_COOKIE_SECURE, SESSION_COOKIE_SECURE, CSRF_COOKIE_SAMESITE, and SESSION_COOKIE_SAMESITE to their least secure settings 2) Updated my CSRF_TRUSTED_ORIGINS 3) Double checked all CSRF/security and middleware (I have all the default) 4) added the url to my ALLOWED_HOSTS 5) added custom CSP where I added the host url to my frame-src and frame-ancestors. 6) Remove the X_FRAME_OPTIONS = 'SAMEORIGIN'

None of these seem to be working and I am

/r/djangolearning
https://redd.it/1e9m3w2

Need to print a page out

Hi all I want to be able to press a button on the webpage and print the page. I've got it setup so it looks good when I ctrl p, but I can't figure out how to make a button that brings the print page up

/r/flask
https://redd.it/1e9oedb

What skills do you need to become a Junior Developer today?

I'm primarily interested in skills related to data, but I'm open to other areas as well. It seems like the requirements for landing a junior developer position are constantly evolving. Could you provide insights into the minimal skill sets needed to secure that first job?

/r/Python
https://redd.it/1e9mr91

CodeRebel
https://youtube.com/@shivamdubey3798?si=YAHh8QlFgw3w1CLm

/r/IPython
https://redd.it/1e9iww4

How can I render dynamic graphs with nodes and edges in my website?

I have a database with nodes and edges. I want users to be able to view the graph, add new nodes and edges and inspect the graph by holding and dragging (just like in the graphic design softwares). I couldn't find a way online to achieve this. Is there a framework or library I can use to achieve this?

/r/djangolearning
https://redd.it/1e8iqy6

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 title.

--

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/1e8btox

How does everyone plan and structure their apps?

I’m new to Django, been looking over different tutorials. For a more complex app, how does everyone plan and map out their app? With django using MVT, is there an easy way to build something usable fast when dealing with more complex apps? How do you polish the UI? Thanks!

/r/django
https://redd.it/1e9tdma

TypeError: Object of type Decimal is not JSON serializable even though the serialized data don't have Decimal type; Sessions are not updated

I have a cart that is integrated with the user's session. In my `APIView`, I made a function that would return a serialized data of my cart items. So other than my `GET` request, my `POST` and `DELETE` requests would also use the said function for my response.

It works if I try to send `GET` request. But I would get a `TypeError: Object of type Decimal is not JSON serializable` for my `POST` and `DELETE` requests. I also noticed that that my items in my session are not being updated. HOWEVER, if I try not to use the said function (the one that returns serialized data), everything works just fine. Can you guys help me understand what's causing this error?

class CartView(APIView):
def getcartdata(self, request):
cart = Cart(request)
cartdata = {
"items": [item for item in cart],
"totalprice":

/r/django
https://redd.it/1ea3vh4

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/1e9tk2t

Taught 100+ aspiring Data Scientists Python, now I'm doing it again for FREE

Hey everyone,

I’m launching a FREE Bootcamp to teach "Python for Data Science". If you’re feeling lost or simply curious about Data Science, this boot camp is designed for you. Interested?

Why am I doing this?
I believe in structured, practical learning. My experiences taught me that having a mentor is crucial who can mak the learning process more engaging and effective. Having managed without a mentor myself, lectures often felt boring, and understanding Data Science from slides alone was challenging. Additionally, I found that affordable and practical options online was severely lacking. Most tutoring options were expensive and didn't provide the hands-on experience I needed. Code Kaisen is my way of giving to students (like me) and to assist you to gain practical experience and avoid the scattered, confusing path I took.

Why Study with Me?
I've been teaching Data Science for the past 2 years. Within six months, I was awarded a super tutor badge on an online platform that I started teaching on. I have taught over 1,500 lessons and contributed to over 500 successful student projects, assignments, and theses. I have completed no less than 10 courses related to Data Science.

My success with teaching motivated me to aid more

/r/Python
https://redd.it/1ea7421

Pydfy: PDF Reporting Made Easy

# What Our Project Does

Python provides many great tools to collect, transform and visualize data. However, we've found no fitting solution for our use case: creating PDF reports from your data. Working at a data agency, several of our clients wanted to distribute daily, weekly or monthly PDF reports with the latest numbers to employees or customers. In essence, they wanted screenshots of the BI dashboard with more context. Unfortunately, the packages out there either provided too much flexibility or too little, so we ended up building our own solution.

This turned into Pydfy: a package that makes it easy to create PDFs that are "Good enough", while providing several extension possibilities to fine-tune them using custom HTML and CSS. We built in support for popular packages such as pandas, matplotlib and polars where relevant.

Github Repository: [https://github.com/BiteStreams/pydfy](https://github.com/BiteStreams/pydfy)
Examples at: https://github.com/BiteStreams/pydfy/tree/main/examples

# Target Audience

Data practitioners familiar with Python that want to bundle their analysis into a readable document, but also data engineers that have to bulk create PDF reports periodically for clients, internal stakeholders, or weekly emails.

The setup for the package has been used in production environments (though these were often not mission-critical). We just built the first versions and at this

/r/Python
https://redd.it/1ea1tqd

[N] Llama 3.1 405B launches

https://llama.meta.com/

* Comparable to GPT-4o and Claude 3.5 Sonnet, according to the benchmarks
* The weights are publicly available
* 128K context

/r/MachineLearning
https://redd.it/1eaaq05

`itertools` combinatorial iterators explained with ice-cream

I just figured I could use ice cream to explain the 4 combinatorial iterators from the module `itertools`:

1. `combinations`
2. `combinations_with_replacement`
3. `permutations`
4. `product`

I think this is a good idea because it is quite clear.
Let me know your thoughts:

### `combinations(iterable, r)`

This iterator will produce tuples of length `r` with all the unique combinations of values from `iterable`.

(“Unique” will make use of the original position in `iterable`, and not the value itself.)

E.g., what ice cream flavour combinations can I get?

```py
# Possible flavours for 2-scoop ice creams (no repetition)

from itertools import combinations

flavours = ["chocolate", "vanilla", "strawberry"]
for scoops in combinations(flavours, 2):
print(scoops)

"""Output:
('chocolate', 'vanilla')
('chocolate', 'strawberry')
('vanilla', 'strawberry')
"""
```

### `combinations_with_replacement(iterable, r)`

Same as `combinations`, but values can be repeated.

E.g., what ice cream flavour combinations can I get if I allow myself to repeat flavours?

```py
# Possible flavours for 2-scoop ice creams (repetition allowed)

from itertools import combinations_with_replacement

flavours = ["chocolate", "vanilla", "strawberry"]
for scoops in combinations_with_replacement(flavours, 2):
print(scoops)

"""Output:
('chocolate', 'chocolate')
('chocolate', 'vanilla')
('chocolate', 'strawberry')
('vanilla', 'vanilla')
('vanilla', 'strawberry')
('strawberry', 'strawberry')
"""
```

### `permutations(iterable, r)`

All possible combinations of size `r` in all their possible orderings.

E.g., if I get 2 scoops, how can they be served?

This is a very important question because the flavour at the bottom is eaten last!

```py
# Order in which the

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

Anyone here created a full project that is live and generating revenue only with Flask HTML, without a frontend framework like React? Could you show us your project, please?


Hi everyone,

I'm curious if anyone here has successfully built and deployed a full project using only Flask and HTML templates, without relying on frontend frameworks like React, Angular, or Vue. I'm particularly interested in seeing examples of projects that are currently live and generating revenue.

If you've done this, could you share your project with us? I'm interested in understanding your approach and any tips you might have for someone considering a similar path.

Thanks in advance!

/r/flask
https://redd.it/1ea9ttn