9 Django Tips for Working with Databases
https://python.works-hub.com/learn/9-django-tips-for-working-with-databases-f48d8?utm_source=reddit&utm_medium=organicsocial&utm_campaign=j.kaplan

/r/django
https://redd.it/bdsq7f

Learning Django for the first time. Need help with error. TemplateSyntaxError - Invalid block tag 'endif'

Hi, I'm new to Django, and Python in general.

I've been following Corey Schafer's Django tutorial but got stuck with an invalid blog tag error: [https://pastebin.com/816QTzDy](https://pastebin.com/816QTzDy)

My base.html looks like this: [https://pastebin.com/ndsbJKi4](https://pastebin.com/ndsbJKi4)

​

At 26:30 in this tutorial: [https://www.youtube.com/watch?v=q4jPR-M0TAQ](https://www.youtube.com/watch?v=q4jPR-M0TAQ)

​

Would appreciate if anyone can help me out here. Thanks in advance!

/r/django
https://redd.it/bdrp3u

Unaffected variables

Hello everyone.

I am doing some little benchmarks with loops on python's data structures

and I would like to know if python is doing some kind of optimization in these

following cases :

​

`for i in l:`

`i`

​

is Python computing the value of `i` even if it is not affected/used ?

​

Same with this for example :

`i = 0`

`while i < SIZE:`

`l[i]`

&#x200B;

Is `l[i]` computed anyway ?

&#x200B;

Thanks

/r/Python
https://redd.it/bdtyp9

What's everyone working on this week?

Tell /r/python what you're working on this week! You can be bragging, grousing, sharing your passion, or explaining your pain. Talk about your current project or your pet project; whatever you want to share.

/r/Python
https://redd.it/bdudq2

[P] I used a Variational Autoencoder to build a feature-based face editing software

Hey reddit,

In my latest weekend-project I have been using a Variational Autoencoder to build a feature-based face editor. The model is explained in my youtube video:

https://youtu.be/uszj2MOLY08

You can inspect the code at Github:

https://github.com/SteffenCzolbe/FeatureTransferApp

The feature editing is based on modifying the latent distribution of the VAE. After training of the VAE is completed, the latent space is mapped by encoding the training data once more. Latent space vectors of each feature are determined based on the labels of the training data. Then to edit an image, we can add a combination of feature vectors to its latent distribution, and then reconstruct it. The reconstruction creates an altered version of the original image, based on the featrures we added to the latent representation.

The model used is heavily inspired by the Bate-VAE used in this paper by google deepmind (https://pdfs.semanticscholar.org/a902/26c41b79f8b06007609f39f82757073641e2.pdf). I made some adjustments to it to incorporate more recent advancements in neural network architecture, like using a Leaky ReLu activation function. The dataset used is celebA, which consist of 200.000 annotated images of celebrities. I aligned and cropped the images to a 64x64 resolution before training. The model is implememted in PyTorch, and PyGame has been used for the GUI. Training on my

/r/MachineLearning
https://redd.it/bdtmgh

Implement ASGI handler and coroutine-safety by andrewgodwin · Pull Request #11209 · django/django · GitHub
https://github.com/django/django/pull/11209

/r/django
https://redd.it/bdtfcd

Provide safe downloads of digital products?

Hi, r/flask!

I am working on a webpage for a friend that's selling beats. The project is nearing an end, but I need to develop a way to provide downloads for the products we sell.

My main focus needs to be security and efficiency. The store needs to provide immediate downloads to customers, and it is naturally very important to prevent unauthorized access to these files.

How can I solve this? What should my main concern be? Where can I get help/info about things like this?


Thanks in advance.

/r/flask
https://redd.it/bds8n4

[D] I couldn’t find a good resource for data scientists to learn Linux/shell scripting, so I made a cheat sheet and uploaded three hours of lessons. Enjoy!

I’ve taught Linux/UNIX/shell scripting at my past few jobs and realized I should record lessons and put them online. This is for everyone who wants/needs to learn Linux on the fly. Hopefully it’s useful.

[The cheat sheet is located here](https://www.dropbox.com/s/k7athu9i8lmmeln/Linux%20Cheat%20Sheet%20David%20Relyea.pdf)

[The three hours of lessons are located here](https://www.youtube.com/playlist?list=PLdfA2CrAqQ5kB8iSbm5FB1ADVdBeOzVqZ)

/r/MachineLearning
https://redd.it/bdviis

Templated Email for Python (use Jinja2 to render emails)
https://github.com/kkinder/templatemail

/r/flask
https://redd.it/bdxysj

A Crash Course in Django: A quick way to get started making basic Django websites without going too in-depth.
https://ceiphr.com/blog/a-crash-course-in-django

/r/django
https://redd.it/bdyd26

https://github.com/JaDogg/expressPython - A small Python editor for learning and competitive programming

/r/Python
https://redd.it/bduzsr

13 Project Ideas for Intermediate Python Developers
https://realpython.com/intermediate-python-project-ideas/

/r/Python
https://redd.it/bdx0jb

[RANT] Fabric 2 jumped the shark with it's complete rewrite

As you may know there's a major new version of [fabric](http://www.fabfile.org/) (out for some months actually); a complete *rewrite to do everything now in the proper way™* in version 2.

I used to love fabric, because

* It fills a gap of doing repetetive task doing manually and using a full-blown automation and provisioning tool like ansible
* It's simple to use, but also powerful enough to do everything you need

Despite all dependencies being ready, there was never a port to Python 3 of the old and beloved fabric 1, so I thought I'd use version 2 for a new project, but damn, does it seem over-engineered now, making everything harder and more annoying:


## No real compatibility with the old fabfiles

Yes, the API is rewritten, and the [changes are major](http://www.fabfile.org/upgrading.html). Since the old fabric won't ever be compatible with Python3, you must use the new fabric (thankfully there's [`fabric3`](https://pypi.org/project/Fabric3/) which was forked from the old fabric to be compatible with Python 3. Apparently, it was not that hard to port, but fabric's original author [preferred to ignore attempts making version 1 Python 3 compatible](https://github.com/fabric/fabric/issues/1378)).

Also, the project is now split into multiple dependencies, like [Invoke](https://www.pyinvoke.org/), [Invocations](https://invocations.readthedocs.io/en/latest/), [Patchwork](https://fabric-patchwork.readthedocs.io/en/latest/).

## No `local` command to run tasks

/r/django
https://redd.it/be193q

[AF] Query an existing MySQL view with Flask-SQLAlchemy / SQLAlchemy

I'm working with a schema that I originally created by declaring models and then using the db.create_all() method to generate everything. Since then, I've created a view manually in MySQL Workbench. I tried just declaring the view as its own model after I had run the script containing the .create_all() call, but it has some weird behavior in that query.all() doesn't return all the results. Additionally, if I try to drop and recreate the schema using my database creation script, I get an "Unknown table" error.

What is the best way to approach this?

/r/flask
https://redd.it/bduf0w

Pyodide: Bringing the scientific Python stack to the browser – Mozilla Hacks - the Web developer blog
https://hacks.mozilla.org/2019/04/pyodide-bringing-the-scientific-python-stack-to-the-browser/

/r/Python
https://redd.it/be0lo9

[AF] about to learn websockets to send simple data from server to native desktop app. Advice?

Hi all,

I've finally written a little web app that is basically an API server that accepts logins, issues tokens and will allow routes based on the token's correctness and presence. Very exciting!

Now I'm at the stage where I need to:

Create a very small native osx and windows app that sits running all the time on client machines and has a websocket connection to my API server.

The idea is, when an API call is made to the server (from another web app I have), it will send out info to the native app to do a small task. Almost like a messaging system but the native app will do a few more things.

Can I ask advice from those that have done something like this on what tools would be useful for me to investigate? I'm all ears to see what the community thinks might be the best way to go.

Thanks a tonne...

/r/flask
https://redd.it/be4f2m

Flask-restly stable version published

Hi all,

&#x200B;

some time ago I wrote [here](https://www.reddit.com/r/flask/comments/9oqg9k/ive_created_new_rest_api_library_for_flask/) about flask-restly library. I use the library myself, also I see downloads from PyPi everyday and there's no issues either from me or users, so recently I decided to publish flask-restly as stable (1.0.0). Feedback will be appreciated :)

&#x200B;

[https://github.com/gorzechowski/flask-restly](https://github.com/gorzechowski/flask-restly)

/r/flask
https://redd.it/bdrk1m

Mozilla bringing Python interpreter to browsers
https://venturebeat.com/2019/04/16/mozilla-details-pyodide-a-project-that-aims-to-bring-python-to-web-browsers/

/r/Python
https://redd.it/be4w97

Django allauth social login for existing user

When I have an existing user in my database but no corresponding social account for that user's email, and I login in using facebook or google, everything works fine and all but on successful connection of my existing user to a new social account, I am redirected to a /accounts/social/connections/ page. I want to avoid getting redirected to this page and I simply want the user to get back to the same page that they were already on. How can that be done?

/r/django
https://redd.it/be5gev

Looking for help using a Flask server and AJAX

**I am a COMPLETE NOVICE, so apologies in advance about the code and my understanding of how it works.**

If you know of a better way to do this, I would love to know. I'm just hoping that you guys/gals might have done a similar project and will know how to help me.

I have my ESP-01 setup to read whether my door is open or closed, using a hand made switch inside the lock. It then makes a JSON packet and sends this data it to my Raspberry Pi running a Flask server. The Flask server generates a web page that displays whether the toilet door is open or closed. **I can make it work upto this point, using a webpage that shows a 1 or a 0.**

***However,*** I wanted to be all fancy and clever, and have the webpage shows a toilet door "VACANT/OCCUPIED" lock that rotates when the sensor updates, but does not refresh the entire page, maybe using AJAX?

https://i.redd.it/649zlwc35ls21.png

This is where I'm stuck; I've made the lock and dial images, but I don't know how to get the page to do this kind of "fancy" animation stuff.

&#x200B;

Any and all help is greatly appreciated.

/r/flask
https://redd.it/bdrf0c

Django REST Framework with PyMongo
https://medium.com/@princesharzeel.10/django-rest-framework-with-pymongo-8e78fd1c33c3

/r/django
https://redd.it/be63h4