DjangoCon US 2018 - Auto-generating an API using PostgreSQL by Mjumbe Poe
https://www.youtube.com/watch?v=fNXpQ14LKfk

/r/django
https://redd.it/aoh983

Best practice for home page and authentication?

I'd like to create an app that displays certain information on the home page if a user is logged in.  Take GitHub for example.  If you are logged in, [GitHub.com](https://GitHub.com) is your profile.  But if you're not logged in, it's a sign up form. 

I guess I'm asking what the best practices are for displaying different information at the same route depending on whether a user is logged in?  Would I use a conditional to return different templates depending on authentication status?  Or is there a better/more secure way?

Thanks for any help you all can provide.

/r/flask
https://redd.it/aojg3c

New to python, wanted to show my first 2 proper projects

I am not sure if this is the right place to post this, but I have been practicing python and wanted to show off my recent projects which I worked hard on getting working (And thanks to someone at r/learnpython for helping me with the first)

​

The first program is a timer, using tkinter for a GUI. I really prefer having a GUI for all my programs, it makes it very nice to use.

[https://steamuserimages-a.akamaihd.net/ugc/939467109946388671/5F61D994F94187E3F6A4DD3C6FF8130CEF7E91E6/](https://steamuserimages-a.akamaihd.net/ugc/939467109946388671/5F61D994F94187E3F6A4DD3C6FF8130CEF7E91E6/)

My second program uses TURTLE Graphics and Tkinter to make a worse-paint program.

[https://steamuserimages-a.akamaihd.net/ugc/939467109946391937/890D58664BB2D587ACDB39B649129A95489DC540/](https://steamuserimages-a.akamaihd.net/ugc/939467109946391937/890D58664BB2D587ACDB39B649129A95489DC540/)

The arrows allow you to turn and move the the turtle, you can change the values it moves by in the boxes and there is a toggle to lift and drop the pen.

​

Thanks for reading!

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

Flask website example

Hello all,

Has anyone found a good resource for flask based websites? I mean pages created with flask that one can download and then modify for learning purposes. I am looking to learning a bit of flask to build a small page to use as a control for a homemade thermostat.

I find that following a tutorial from the beginning takes a really long time and I think it would be helpful to have a working example that one can modify while reading the documentation.

Cheers

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

PyCon 2020-2021 location announced - Pittsburgh!
https://pycon.blogspot.com/2019/02/pycon-2020-2021-location.html?

/r/Python
https://redd.it/aom1dp

len("😂") crashes IDLE

Kinda cool, I guess.


(Latest release (3.7.2) for Windows.)

/r/Python
https://redd.it/aolz00

[N] University of Toronto is offering a course on Quantum Machine Learning through edX!

The course has just started a few days ago: [https://www.edx.org/course/quantum-machine-learning](https://www.edx.org/course/quantum-machine-learning)

>By the end of this course, you will be able to:
· Distinguish between quantum computing paradigms relevant for machine learning
· Assess expectations for quantum devices on various time scales
· Identify opportunities in machine learning for using quantum resources
· Implement learning algorithms on quantum computers in Python

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

Is BeeWare reliable at the moment ?

hello , I have several months to complete a school project and PyBee is exactly what I am looking for , considering python for building cross-platform apps for mobile phones only, has anyone succeeded in making an App using BeeWare ? Or is it better to learn C# and consider Xamarin ?

P.s: I have fairly good knowledge in C,C++ and several other basic langs.

Thank You, Have a nice day ahead.

/r/Python
https://redd.it/aok052

Best date time picker for meeting / event scheduled app

Hi all,

I’m need some inspirations for date time pickers to implement for web django app similar to doodle.

The logic I proposed is users can either create events with fixed date / time settings or more dynamic date/ time settings.

Further explanation:
Select availability?
a. Date
b. Set time
i. Start time
ii. End time
*Both optional, in most cases users will have a start and end time


I would be grateful for any recommendations that work well with bootstrap 4 and django.



/r/django
https://redd.it/aonb70

Run a tensorflow.js program using flask

Im new to both flask and tensorflow, so its probably not surprising that i have no idea what i am doing

What i want to do, however is this: run a tensorflow demo ([https://github.com/tensorflow/tfjs-examples/tree/master/webcam-transfer-learning](https://github.com/tensorflow/tfjs-examples/tree/master/webcam-transfer-learning)) with flask.

Problem: when i run it, the demo, which should use the webcam, says it cannot find a webcam.

(webcam is there, live demo works as expected, but the locally run demo cannot turn on or even find the webcam)

Is there even a known way to solve this? Or will i have to butcher the demo to accept the webcam frames sent from the server side (like this: [https://github.com/log0/video\_streaming\_with\_flask\_example](https://github.com/log0/video_streaming_with_flask_example))

​

/r/flask
https://redd.it/aor0u2

Best book or resources for mastering django 2.2 ?

I learned basics of Django and i want to master django in-depth step by step.

/r/django
https://redd.it/aorv3w

Is there a way to use the django_extensions shell_plus --notebook as the shell for debugging a view using ipdb.set_trace()?

It's an esoteric use case, but basically, stepping through the code in ipdb is great for debugging, but it would be even better to step through the view code in an jupyter notebook.

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

Looking for Machine Learning Course recommendation.

Hi guys,

​

Have a pretty good experience in Python and want to build a new ML skill.

​

What would you recommend for me? Books, courses, videos etc

​

Thank you.

​

PS: Since a lot of people give a very good recommendation here, I would like to summarize something in the topic:

* [scikit-learn documentation](https://scikit-learn.org/stable/index.html) has a lot of good examples.
* [Coursera Machine Learning by Andrew NG (Stanford)](https://www.coursera.org/learn/machine-learning) \- it is more theoretical course, ±3month long. Without using Python, but Octave/Matlab . Python assignments for the machine learning class can be found in [this github repo](https://github.com/dibgerge/ml-coursera-python-assignments).
* [Coursera Applied Machine Learning in Python (University of Michigan)](https://www.coursera.org/learn/python-machine-learning) \- smaller course in terms of time, 4 weeks, but with using Python
* [Sentdex series of Machine learning](https://pythonprogramming.net/machine-learning-tutorial-python-introduction/) \- he is a very active YouTube Python Blogger, so with 72 videos in the course he covered quite a lot. They also have they own Discord chat for questions.
* [course.fast.ai](https://course.fast.ai) \- Practical Deep Learning for Coders, v3, this is a third version of this course, which means this guy has some experience in teaching. The course itself is using [fast.ai](https://fast.ai) (his own lib) and PyTorch
* [Stanford Course on YouTube](https://www.youtube.com/playlist?list=PL3FW7Lu3i5JvHM8ljYj-zLfQRF3EO8sYv)
* [MIT 6.S094: Deep Learning for Self-Driving Cars](https://selfdrivingcars.mit.edu/)
* [Google's Machine Learning Crash Course with

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

Anyone able to help resolve this Jupyter-lab error?
https://bbs.archlinux.org/viewtopic.php?id=244078

/r/IPython
https://redd.it/aosxgk

Example app that uses testing framework

I’ve developed using Django for awhile now, but admittedly have never built an app that used unit tests or the built in testing framework. I’d like to change this in 2019, but tend to learn best by examining working code rather than from books/videos.

Does anyone have a good, preferably small-ish/simple project using Django that incorporates unit tests they could recommend as an example that is open source?

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

How to deploy Gunicorn behind Nginx in a shared instance
https://medium.com/@RafaelBattesti/how-to-deploy-gunicorn-behind-nginx-in-a-shared-instance-f336d2ba4519

/r/Python
https://redd.it/aox99q

[D] The Limitations of Deep Learning for Vision and How We Might Fix Them

Newest article from the Gradient discussion what deep learning can and can't do. [https://thegradient.pub/the-limitations-of-visual-deep-learning-and-how-we-might-fix-them/](https://thegradient.pub/the-limitations-of-visual-deep-learning-and-how-we-might-fix-them/)

/r/MachineLearning
https://redd.it/aova4j

I recreated Flappy Bird in Python with Pygame!

The link to the GitHub page is [here](https://github.com/carterjean/Flappy-Bird-in-Pygame/).

I thought that to learn Pygame I would start with a physics heavy, yet retro game.

On the page, you can download the images and file and play it for yourself!

One problem that I found is that I couldn’t find a way to automatically restart the game :/

If you have any problems with the game, just leave a comment and I’ll try and fix it!

Edit : not sure why there’s a massive picture of Garfield there but okay

Edit 2 : oh that’s my profile pic never mind

/r/Python
https://redd.it/ap0dwe

Accessing child relations when overriding save()

I am trying to wrap up my first app using Django (specifically Django Rest Framework which may change the save behavior), but have run into an issue that I haven't been able to solve for about 10 hours now.

I am trying to override the save() method of a model to modify a field on a bunch of child objects when it is created; however, I can't figure out any way get the objects or ids for the children.

My code looks something like:
~~~
class Parent(models.Model):
"""When I create this, I want the children to be modified."""
def save(self, *args, **kwargs):
if not self.pk:
self._begin(*args, **kwargs)
else:
super(Parent, self).save(*args, **kwargs)

def _begin(self, *args, **kwargs):
super(Parent, self).save(*args, **kwargs)
print(self.child_set.all()) # --> This gives: "<QuerySet []>"
for i in self.child_set.all():


/r/django
https://redd.it/ap1t7f

[D] Adversary, Attractor, Astonishment : Subverting traps in Human vs AI games

Hi,

&#x200B;

I am an AI PhD student at MIT and I just wrote an (hype neutral) article discussing human vs AI in games in the context of the recent AlphaStar agent that learns to play Starcraft 2.

&#x200B;

Specifically, I discuss under which circumstances is it hopeless for a human to win, and under which circumstances do we have a good shot. Link here: [https://medium.com/@evanthebouncy/adversary-attractor-astonishment-cea801d761](https://medium.com/@evanthebouncy/adversary-attractor-astonishment-cea801d761)

&#x200B;

It should be a good read ! !

&#x200B;

I can answer any questions here as well, I do not work for DeepMind so I can be more frank in my answers, but at the same times these answers will largely be speculative as I do not work directly on the project.

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