y’all are so are so advanced with you project but this is my first project in python hope u like it😂

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

Question about handling authentications with tokens using Django Rest framework

Hello everyone! I am trying to build a mobile application with Django in the backend. For this I am using Django rest framework. Looking at the docs, I am confused about the usage of OAuth or JWT Authentication in my application. I have been using djangorestframework-jwt but this doesn't support obtaining access token after they expire using the refresh token mechanism (Note: It only supports the mechanism to refresh token before it is expired which is a different thing). So I am thinking of going with django-rest-framework-simplejwt. However, this doesn't store the refresh tokens in the database. Are there any drawbacks to it? Can I use it in my application without having to worry about the security provided that both the access-token and refresh-tokens stored in the local storage of the device are encrypted? Or is there anything else, I need to consider before taking this route? And what functionality do the Oauth toolkits provide? As far as I know OAuth is a protocol for authentication which may or may not use JWTs as token formats. Do I need to use them for better functionality whatever they maybe? To keep it simple, I just need to do what the mobile

/r/djangolearning
https://redd.it/asas6t

Flask-login limit pages to admin accounts

I've implemented Flask-login extension on my site which I am very happy with. I don't want to use Flask-user yet as I want to understand everything before I give over control and become dependant on Flask-user for everything.

I've been using my google-fu for about two days and I can't find a simple way to limit pages for admins in a pythonic/flask type way. My current hack involves something like this:

@admin.route("/admin")
@login_required
def admin_home():
account_type = current_user.account_type
if account_type == "admin":
return render_template("admin/admin.html")
else:
return redirect(url_for("member.member_page"))

Which works and I will turn it into a function if its the best way to do it. BUT I can't believe there isn't a snippit

I've built my own decorator before, would you build a new decorator to between the function and the @login\_required? Or is there some easy way that I haven't found? Nothing

/r/flask
https://redd.it/ath57t

sessions persisting across requests

Hi all, I'm running flask with gunicorn and having issues with the session persisting across requests.
the session persists when going from /set to /check. But when a session value is set in the authenticate route
it is then lost, no idea why this is happening and a bit lost now.

# //-- api route app.py
from flask import Flask, session
from flask_session import Session
import routes.authenticate
import redis

Authenticate = routes.authenticate.Authenticate()

app = Flask(__name__)
app.config['SESSION_TYPE'] = 'redis'
app.SESSION_REDIS = redis.Redis("redis")
app.secret_key = "123"

sess = Session()
sess.init_app(app)

@app.route("/set", methods=["GET"])
def set():
session["test] = "foo"
print(session)


/r/flask
https://redd.it/at1cwy

Serialchemy: a library to serialize/deserialize SQLAlchemy models

https://github.com/esss/serialchemy

_Serialchemy was developed as a module of a lib to create Restful APIs using Flask and SQLAlchemy. We first tried marshmallow-sqlalchemy, probably the most well-known lib for SQLAlchemy model serialization, but we faced issues related to nested models. We also think that is possible to build a simpler and more maintainable solution by having SQLAlchemy in mind from the ground up, as opposed to marshmallow-sqlalchemy that had to be designed and built on top of marshmallow._

Suggestions and reviews are extremely welcome.

/r/flask
https://redd.it/atom47

Does someone has ever heard about odata and graphql?

Hi all,

currently I am reading a little about graphql, it sounds like a nice idea to make the data transaction a little faster, only add several line codes. Then I remebered another language, odata, an open data protocol, which is heavily used by SAP. Then I did a little search in google, it looks like odata is more powerful than graphql. So, I want ask you guys here, did you ever heard about the two things? Have you ever used it? What's your opinions?

​

​

/r/flask
https://redd.it/asb59s

[D] Blog posts on AlphaStar

Hey all,


I wrote some stuff on AlphaStar. I was planning to finish this right after the match came out, but real life got in the way, and I had a lot of things I wanted to cover.


Part 1: [https://www.alexirpan.com/2019/02/22/alphastar.html](https://www.alexirpan.com/2019/02/22/alphastar.html)

Part 2: [https://www.alexirpan.com/2019/02/22/alphastar-part2.html](https://www.alexirpan.com/2019/02/22/alphastar-part2.html)


If you like it / dislike it / think my opinion is trash, let me know.

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

Why class based views?

[http://flask.pocoo.org/docs/1.0/views/](http://flask.pocoo.org/docs/1.0/views/)


What are the advantages of constructing views via classes rather than functions? What are some things to think about when deciding one over the other?

/r/flask
https://redd.it/atsq5z

Preventing dynamic javascript output in Notebook

Hi.

I have a rather unusual problem, so I couldn't find the answer to my question. People usually want to get dynamic output in cells, not reliably prevent it.

I want to use the notebook to generate reports for student submissions, so that they and me can easily review their solutions. However to do this, I need to prevent any mischievous behaviour. :)

The way it works is, the student prepares a python module with a specified interface and uploads it to a server. In a sandbox environment I run a notebook that imports that module, runs some tests and generates some plots. The results is saved as a html, and can be displayed on the students submission page, where it can be viewed by me or him.

Is there a way to prevent the students to inject any active javascript or other malicious content into notebook cells, that might high jack my browser session (with admin/teacher login :) ) ? Do i need to prevent this in the first place?

​

/r/IPython
https://redd.it/att17t

Google Maps data: Plot the places you have visited
https://kanoki.org/2019/01/20/thank-you-google-for-sharing-my-data/

/r/Python
https://redd.it/atrzt4

Happening now: Pycon APAC 2019

/r/Python
https://redd.it/atqcs3

George Hotz | Basic Programming | ipython | counterfactual regret minimization
https://youtu.be/7m4bnmSkjow

/r/IPython
https://redd.it/atuq01

You can generate wall paper fractal images with python and glsl !

/r/Python
https://redd.it/atffg8

Using the new %pip magic successfully

To use \`%pip\`, you need permission to write into pip's install prefix, which depending on the exact runtime environment you won't have (especially with JupyterHub installations). Passing the \`--user\` option will usually ensure that, but then you might want to have your notebook packages separate from ones you use in the shell – this shows how to do that.

​

See \[Embedded Dependency Installation\]([https://nbviewer.jupyter.org/github/jhermann/jupyter-by-example/blob/master/setup/configuration.ipynb#Embedded-Dependency-Installation](https://nbviewer.jupyter.org/github/jhermann/jupyter-by-example/blob/master/setup/configuration.ipynb#Embedded-Dependency-Installation)) on nbviewer for details.

/r/IPython
https://redd.it/atx1iv

[D] Undergraduate student feeling completely overwhelmed

As an undergrad student with a math major that wants to pursue ML in grad school (preferably the top ones) I am feeling completely overwhelmed. I need to keep my grades and GPA high for grad school, am doing research with professors (cannot make much progress as I don't understand much of the deep learning foundations), doing side projects, applying to internships and preparing for interviews, and trying to learn as much as possible in the field. I am also trying to improve my coding skills as I lack some of the more foundational knowledge in OOP and OS and so forth since I don't have a CS major. It honestly seems impossible to balance all of this and I find myself staying up late at night stressing out and trying to cram as possible and it doesn't seem to be getting me any closer to my goals. In fact it is affecting my health and relationships. Maybe I am expecting too much of myself an undergraduate student?

The major issue is just finding the goddamn time to learn the machine learning and deep learning content and keep up with what's going on while being a full time student. Much

/r/MachineLearning
https://redd.it/atu995

[R] Evaluating the Search Phase of Neural Architecture Search: random policy outperforms state-of-the-art NAS algorithms
https://arxiv.org/abs/1902.08142

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

Django ORM optimization story
https://www.peterbe.com/plog/django-orm-optimization-story-on-selecting-the-least-possible

/r/django
https://redd.it/attlj9

PYCascades 2019 is live!
https://m.youtube.com/watch?v=hAnCiTpxXPg

/r/Python
https://redd.it/au0bgs

_set.all() object has no attribute 'all'

PROBLEM SOLVED. THX.



/r/djangolearning
https://redd.it/au1wbq

Reverse lookup on foreign key in template



I'm trying to output the field of a model instance that is a foreign key of a model that I have the context of in my template.

**Models.py**

class Product(models.Model):
title = models.CharField(max_length=120)
def __str__(self):
return self.title

class Variation(models.Model):
product = models.ForeignKey(Product, on_delete=models.CASCADE)
title = models.CharField(max_length=120)
price = models.DecimalField(decimal_places=2, max_digits=20, default=0)
def __str__(self):
return self.title

There can be many variations to one product. Within my template, the following will output the title of the variation

{cart.variation}

How can can I get the title of the product given the foreign key relationship from variation to product and output that in my template?

I've tried this, but it doesn't work:

{cart.variation.product_set.first.title}

/r/django
https://redd.it/au1tgj