Problem opening a thumbnail

Hi everyone!

I'm attempting to open a thumbnail of an image that was saved with django-versatileimagefield

https://django-versatileimagefield.readthedocs.io/en/latest/

file = instance.image.thumbnail'1920x1080'.open(mode='rb')

I'm getting the following error:

'SizedImageInstance' object has no attribute 'open'

I have success with the following line of code, but I want to open the smaller version as opposed to the original version

file = instance.image.open(mode='rb')

If it helps, the url of the image is instance.image.thumbnail['1920x1080'\].url

Thanks!

/r/django
https://redd.it/102qn4m

Best practice for displaying local time

Hi!

What is the best practice in django for handling timezones?

If I understood correctly, it would be the best to have TIME_ZONE = 'UTC' and USE_TZ = True in settings.py, but I am really struggling to understand how to then display the correct time depending on the user's location.

Thank you very much in advance for your help!

/r/django
https://redd.it/102ia4p

How to aggregate

I have two models, Journey, and Review in my models

class Journey(models.Model):
COUNTRY_CHOICES = [
('Malawi', (
('Lilongwe', 'LILONGWE'),
('Blantyre', 'BLANTYRE'),
('Mzuzu', 'MZUZU'),
('Zomba', 'ZOMBA'),
('Kasungu', 'KASUNGU'),
('Mangochi', 'MANGOCHI'),
('Karonga', 'KARONGA'),
('Salima', 'SALIMA'),
('Nkhotakota', 'NKHOTAKOTA'),


/r/django
https://redd.it/102bylp

What's the proper way to pass data from JS to Python?

If I have a page that displays comments, and each comment has a delete button, then how do I implement the delete functionality using url_for?

My first attempt put the unique comment ID as a data attribute on the each Delete button, and JS extracts the ID from the clicked button and uses window.location to send the request. Unfortunately this requires passing the ID variable from JS to Python such that url_for can properly use it, but this isn't supported. It works fine if I simply generate the string manually though.

So is the proper solution to generate a unique JS function for each Delete button? Or is it to simply not rely on url_for, and have inconsistent url generation throughout the project based on the situation it's used in? Or is it something else? Thanks

/r/flask
https://redd.it/102r73t

Question regarding best practices with user uploaded images being used for templates, and how to properly set it up for production.

Hello. I'm currently in the final steps of deploying a small, largely static microblog using Flask. I think there's an important thing to point out: Authorized users will be able to log in, create a blog post, include a photo, and then from there the website will output their blog post. I am currently using Flask-Admin for this, and employ the ImageUploadField class within the form. The logic then sanitizes the filename, commits the filename to the blog's model as "img", then dumps the images themselves into the static folder. Then within the template, i simply point to that folder and populate article cards with the model's content. Though I know (and heard multiple times) that you should instead generate the path or the filename to the image and save that in the model. Currently, only one of the templates are properly serving the images, while the 4 others aren't. Their respective routes only query the db for each respective type of post, and send the bulk of the contents to be iterated over within the template.

Here's the thing: If the user uploaded images are the ones being served by the website, what is the best way to set this

/r/flask
https://redd.it/102ikfx

Structuring personnal code with existant UI Theme

Hello,

​

I am developing an application based on all my python scripts so i thought using Flask to convert them as web application. I downloaded a theme from AppSeed (https://docs.appseed.us/products/flask-dashboards/material-dashboard)

But i want to be sure how can i add my scripts and structure the application. I want to use blueprints and make one for each application component.

So i think i need to add folder like home or authentication and inside them a routes.py file, a models.py file and forms.py file and my scripts ?

Thank you for you help

https://preview.redd.it/ms02x2kw9u9a1.png?width=838&format=png&auto=webp&s=82724e4f366c05433c6fbbc598675015a0dfef67

/r/flask
https://redd.it/1029pwa

how to deploy flask

I created projects in flask and sqlite3. How to deploy/host project? As heroku is paid I cant afford.

/r/flask
https://redd.it/10234nd

Django Rest Framework authentication and Django Middleware: Why request.user is anonymous? A solution.
https://medium.com/@batiste/django-rest-framework-authentication-and-django-middleware-why-request-user-is-anonymous-d9d62bddf4f6

/r/django
https://redd.it/1035rtc

JupySQL: Better SQL in Jupyter
https://ploomber.io/blog/jupysql/

/r/IPython
https://redd.it/1039yqf

C on Jupyter Notebook Warnings

Hi so hope this is the right place for this, I am on MacBook Pro M1 Pro and have installed Jupyter Notebook on VSC and downloaded this c kernel and when I try to use it with the code below the code runs ok but I get these two warnings. I also tried on Jupyter notebook from anaconda and I get the same warning so Its not from vsc. Does anyone know how to remove these warnings? Any help in appreciated

https://preview.redd.it/rbh2x3itu2aa1.png?width=3248&format=png&auto=webp&s=0d89ae40160079f29c55dfb7c75d8724cd08337d

https://preview.redd.it/xyli6vitu2aa1.png?width=3248&format=png&auto=webp&s=f8ed647a8c64c6922e1a731f113c19582b55a751

/r/JupyterNotebooks
https://redd.it/103cl24

Thursday Daily Thread: Python Careers, Courses, and Furthering Education!

Discussion of using Python in a professional environment, getting jobs in Python as well as ask questions about courses to further your python education!

This thread is not for recruitment, please see r/PythonJobs or the thread in the sidebar for that.

/r/Python
https://redd.it/103jifx

Script in Jupyter Notebook to run in Anaconda command window

I am trying to get a script to run a number of similar commands based on items in a dictionary, but I haven't been able to find the information to tell it to run this recurring command in an Anaconda command window. Here is my code:

import yt-dlp

​

​

dict = {

​

​

"folder1" : "url1",

​

​

}

​

​

​

​

​

for (x,y) in dict.items():

yt-dlp -f best -o "D:\\youtube-archive\\{}\\%(title)s.%(ext)s" {}.format(x,y)

​

print("hello world")

What I want this to do is cycle through the for loop for as many times as there is a key:value paring in the dictionary with the key being in between the slashes and the value being between the end quote and period. The hello world portion is just so that I know that at least something happened, which only happened when I dragged and dropped it into an open Anaconda command window. I vaguely remember something about import os being a way to make this happen, but that is for the windows command prompt, not anaconda. Is there an equivalent for Anaconda?

/r/JupyterNotebooks
https://redd.it/103jxm1

urllib3 raised $26,000 and shipped v2.0 in 2022
https://sethmlarson.dev/urllib3-in-2022

/r/Python
https://redd.it/1035bdi

Using the flask_login library I am not able to access a restricted route that requires login even though user is logged in

I cannot access a restricted route in my flask application whilst using the flask\_login library although I have "logged in" the user. Does anyone know the issue?

This is the [code](https://pastebin.com/zBBzXHfh) for the login route

This is the [code](https://pastebin.com/KaBA3yak) for the restricted route - I've tried both is\_authenticated method and the "**@login\_required**" decorater:

I've tried both

@login_required

and

if not current_user.is_authenticated:

however both do not work.

​

/r/flask
https://redd.it/103i43e

How to rendertemplate to fetch post request?

I have a jinja template that needs JavaScripts fetch function to post a picture to the backend. The jinja template has a template variable called message, on the server I would like to return rendertemplate(index.HTML, message=“in correct image format”), obviously it doesn’t work as the response is handled by JavaScript. How can I achieve that same effect using window.location.attach()?

Or if you have a better way to handle this I’m open to suggestions!

/r/flask
https://redd.it/103gtti

How do i render link to a url in html without appending the current one

I don't know how exactly to phrase my question but...

I am building a stock market app.

When I am at page 4 of the S&P 500 (http://127.0.0.1:5000/SANDP/4), The pages are generated with dynamic urls, and I click on a link with href Info/<symbol> The new url is http://127.0.0.1:5000/SANDP/Info/<symbol> so it appends the old one.I want to clear the old one so the new one will be http://127.0.0.1:5000/Info/<symbol>. I have tried url_for as well in jinja but it does not work.

/r/flask
https://redd.it/103g8un

Blueprints and import function from other file

Hello guys,

I am trying to develop a flask application with blueprints to keep it clear and structured.

And in a route.py file from a specific blueprints, i am trying to import a file containing functions from another blueprint.

&#x200B;

&#x200B;

https://preview.redd.it/k3dp4czhg0aa1.png?width=1118&format=png&auto=webp&s=d3b82be26cc8ecf9893ef30d7acc2880a975cedc

The file is located in apps > helper and his name is util.py

&#x200B;

When i run flask, i got an ImportError function

&#x200B;

https://preview.redd.it/6b2azg1ng0aa1.png?width=986&format=png&auto=webp&s=d03090a0b9850b657e94384b69800e771dd4790c

&#x200B;

I searched a lot before creating this post but i am stil stucked.

Thank you

/r/flask
https://redd.it/10317ub

Flask is not updating my CSS (but it is?)

Like the title says, I'm running a flask app and it is not updating my CSS file...is what I thought was happening. However, upon looking through inspect element, it turns out that it actually is updating those files. I can see files getting loaded in the Network panel, and checking them in the Sources list shows that they're indeed the latest version. So what's wrong? I guess the browser is just not using the updated versions...until I manually edit them? As soon as I make any change in those files (within inspect element), the layout gets updated perfectly. But it's not a browser issue either! I've turned off browser caching, I've done hard refresh a hundred times, tried loading the page in incognito mode, heck even tried a different browser (that should rule out any doubts, right?). In summary, this is what I've tried so far:

- hard refresh of the page
- disable browser cache
- clear all cache in the browser
- run the app in debug mode
- set app.config to to enable TEMPLATESAUTORELOAD and reduce SENDFILEMAXAGEDEFAULT to 0
- add custom tail to the CSS URL (like this one, and yes, the correct files are still

/r/flask
https://redd.it/10322q4

N Legal NLP Dataset With Over 39,000 Examples Released

Legal datasets are extremely expensive because lawyers are, and this has bottlenecked legal NLP.

To address this, we release the Merger Agreement Understand Dataset (MAUD), with over 39,000 multiple-choice reading comprehension examples for 152 merger agreements that have been manually labeled by legal experts. The dataset was created with the help of the American Bar Association; without their help the dataset would have cost over $5,000,000 to create.

MAUD has substantial room for improvement and can could serve as a research challenge for NLP researchers without any legal background.

Dataset and Baselines: https://github.com/TheAtticusProject/maud/

Paper: https://arxiv.org/abs/2301.00876

/r/MachineLearning
https://redd.it/103b1ck

PyTorch discloses malicious dependency chain compromise over holidays
https://www.bleepingcomputer.com/news/security/pytorch-discloses-malicious-dependency-chain-compromise-over-holidays/

/r/Python
https://redd.it/103u5rr