This tutorial is for people who want to start learning python or have confusion regarding Python. This tutorial has a series of videos explaining python and its implementation.
https://www.youtube.com/playlist?list=PLVHgQku8Z935Qq0h3SZpSOwSrUMx1y3c9

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

Trying to get timezone working in a model

I've set up a model with timestamp fields, using

from django.utils import timezone

Then as part of the model

created_at = models.DateTimeField('Created', editable=False)
last_active = models.DateTimeField('Last activity')

The save process is overridden to update these fields as appropriate.

if not self.created_at:
self.created_at = timezone.now()

self.last_active = timezone.now()

When I run my unit test, which basically only creates a record and checks the values, I get errors with

RuntimeWarning: DateTimeField <model>.created_at received a naive datetime (2019-02-16 18:18:58.692009)
while time zone support is active.
RuntimeWarning)

'USE_TZ' is set to True in settings.py.

Now I get that the error is telling me that the values don't include timezone offsets, but my question is why, when I am using the timezone functionality from django.utils? I thought that was built in there?

Any suggestions?

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

Need help for Django polls(Beginner)

I can't seem to make a poll server.Hope the information helps

1.The first error i received

ImportError: cannot import name 'views' from '\_\_main\_\_' (C:\\Users\\thapa\\AppData\\Local\\Programs\\Python\\Python37-32\\mysite\\polls\\[urls.py](https://urls.py))

2. 2nd error in mysite.urls.py

ModuleNotFoundError: No module named 'polls'

https://i.redd.it/ak94g6qqzxg21.png

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/r/django
https://redd.it/ar9c6w

A line follower robot my classmade and i made with python for our minor project. Turned out working great :D

/r/Python
https://redd.it/ar9s51

UFC MMA Predictor (70.4% accuracy)

Hi everyone,

I would like to share with you all a project which I have been working on this week. It's called the **UFC MMA Predictor.** It is a web app I developed to help predict upcoming UFC fights. The web app can be accessed at [https://ufcmmapredictor.herokuapp.com/](https://ufcmmapredictor.herokuapp.com/)

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Some features of this web app:

* 70.4% accurate
* Fighters and fights data scraped daily
* Model trained up from UFC 159 to most recent fight card (more than 2,000 fights)
* Predictors used to predict outcomes:
* Decimal odds spread (different of favourite minus underdog)
* Strikes landed per minute
* Strikes absorbed per minute
* Striking defense
* Striking volume
* Take down defense
* Submission attempts per minute
* Takedown accuracy

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GitHub link: [https://github.com/jasonchanhku/UFC-MMA-Predictor](https://github.com/jasonchanhku/UFC-MMA-Predictor)

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**Demo**

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[Correctly predicted this one despite GSP being the underdog!](https://i.redd.it/nxm2i56nmxg21.png)

/r/Python
https://redd.it/ar8rwt

DigitalOcean's Django One-Click Application: setting up virtualenv for python2 and python3.

I just recently started fiddling with DigitalOcean's one click Django app, after setting it up from scratch before. It's really convenient but its fatal flaw for me was the fact that it used Python 2.7 and did not use a virtualenv. So I set about trying to see what it would take, in the simplest way possible, have it use a Python 3 virtualenv. Here's the sequence that I used (as of February, 2019):

from the root login:
sudo usermod -a -G sudo django
su django
cd ~/django_project
pip freeze >> requirements.txt
virtualenv venv
sudo apt install libgirepository1.0-dev gcc libcairo2-dev pkg-config python3-dev gir1.2-gtk-3.0
sudo apt install libicu-dev

I found that the version of PyGObject installed in the One Click container was no longer supported by pip, so I edited requirements.txt and removed the version requirement. I did the same for pycairo and PyICU, though these may still be supported by pip.

vi requirements.txt
change the following to remove version requirements:
pycairo
pygobject


/r/djangolearning
https://redd.it/ard4wb

Is this a good way to apply a decorator to all routes in a blueprint?

All routes in my application that being with `/api/admin` are protected by checking if the authentication token contains the `ADMIN` role in it.

So instead of applying a decorator before each function in the blueprint (called `admin_api`, I have this at the top instead.

My custom decorator is called `is_admin` which does the check of the JWT. ~~For some reason I also have to specify `jwt_required` (using flast_jwt_simple package).~~ Edit: I put it in the `is_admin` method and it works.

@admin_api.before_request
@is_admin
def check_if_admin():
pass

Is this the right way to go about it? Seems kinda hackish.

/r/flask
https://redd.it/araty2

Steps to become a professional django developer

I have just completed a django tutorial and built a cloud music player website. I have also implemented it's api. What are the next steps i should take in order to be a professional django developer. I am open to contributing to open source , if that helps me in learning best practises and more about web developement. Thanks !

/r/django
https://redd.it/are5ir

[P] Simple Tensorflow collection of easy-to-use codes

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[by taki0112 \(Junho Kim\)](https://i.redd.it/6ihziuz4g1h21.png)

Hello.

I made a cookbook for easy use of the tensorflow code. (e.g. conv with spectral norm, partial conv, pixel shuffle, several normalizaion function, tf-datasetAPI, etc.)

Just copy & paste!

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In now, this repo contains general architectures and functions that are useful for the GAN.

I will continue to add useful things to other areas.

Also, it's not here, but if there are things you use often, please add them!

Your pull requests and issues are always welcome.

And write what you want to implement on the issue. I'll implement it.

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github : [https://github.com/taki0112/Tensorflow-Cookbook](https://github.com/taki0112/Tensorflow-Cookbook)

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Also, I am going to add code for tf-Eager mode !

Thank you.

/r/MachineLearning
https://redd.it/arg0vm

I made a Gaussian curve fitter using matplotlib and scipy

/r/Python
https://redd.it/arek26

Jupyter Notebooks Development Manifesto
https://blog.kovalevskyi.com/jupyter-notebooks-development-manifesto-88a1ddb24581

/r/JupyterNotebooks
https://redd.it/arhywu

Does someone knows the real maximum size of pickle ?

Hello everyone,

I'm getting data for my deep learning project, since the AI will have to process all the data i left aside the database option.
Righ now have a list of objects which weight about 500Mo and contains 7M objects, every 10K objects i store it as a pickle file and it still works fine.

However i'm concerned that theres is some kind of limit to pickle and since i'm going have 300M to 400M objects i don't want my dataset to get corrupted at half the process.

Does anyone knows pickle real limits ?


/r/Python
https://redd.it/ari3na

Any good projects need some part time help?

Going to part time work for a few months anyone working on something interesting that needs another dev? I have experience with most stacks out there.

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

How to Connect a Customized Checkbox to a Form/Model?

I have this BooleanField in my forms.py, and I'm trying to change the checkbox in the template into a toggle button (the slider switch type). I tried to do

<label class="switch">
<input type="checkbox">
<span class="slider round">{ p_form.email_visible }</span>
</label>

as per the instructions found at [w3schools](https://www.w3schools.com/howto/howto_css_switch.asp) and putting the template variable inside the span tag, but that dog wont hunt, which I kinda expected.

I've had a look at widgets in the official docs, but I'm confused whether that's the right path, as there's no information that directly addresses what I'm trying to do.

Browsing _The Land of Milk and Honey_ I found a few results that looked like they had something to do with my question, but as per usual, I don't get those posts, and it also only adds to the confusion, I'm afraid.

The slider shows up just fine in the template, but no change is made to the model as I hit it and then click my little submit button.

So, without further adieu: How do I connect the form (and the model, I guess...) to

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

sqlalchemy not working

I'm trying to build a site and every time I try to use sqlalchemy I can't get the errors to go away. So I tried to just try to do a simple sqlalchemy tutorial to try to figure it out and I'm getting an error with the simplest thing. Please help me.

Code I'm running is just to build a database with a table:

>import os

>import sys

>from sqlalchemy import Column, ForeignKey, Integer, String

>from sqlalchemy.ext.declarative import declarative_base

>from sqlalchemy.orm import relationship

>from sqlalchemy import create_engine
>
>Base = declarative_base()
>
>class Person(Base):

> __tablename__ = 'person'

> id = Column(Integer, primary_key=True)

> name = Column(String(250), nullable=False)
>
>class Address(Base):

> __tablename__ = 'address'

> id = Column(Integer, primary_key=True)

> street_name = Column(String(250))

> street_number = Column(String(250))

> post_code = Column(String(250), nullable=False)

> person_id = Column(Integer, ForeignKey('person.id'))

> person = relationship(Person)
>
>engine = create_engine('sqlite:///sqlalchemy_example.db')
>
>Base.metadata.create_all(engine)


I'm getting the following error:

>sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) unable to open database file (Background on this error at: http://sqlalche.me/e/e3q8)

I did what the error suggested and tried adding pool_pre_ping=True to my engine. It didn't make any difference. Also I ran the code on python anywhere and it worked as expected.

Any idea

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

Just noticed that the code in "Ralph Breaks the Internet" is in python

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

Python Logging: An In-Depth Tutorial
http://go.morioh.net/051a2cd256

/r/Python
https://redd.it/arkz4y

There’s a new Jupyter Meetup in the Netherlands
http://meetu.ps/c/4dGFN/nF4Bd/a

/r/JupyterNotebooks
https://redd.it/aqmsb1

[D] Did weight decay fall out of favor for regularizing NNs?

At least this is my impression based on it no being used anymore in newer papers. But how come? By contrast to other techniques it actually has a very solid theoretical foundation.

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/r/MachineLearning
https://redd.it/arlq1d

My Django note taking tool for my engineering journal

I wanted to share my first django project should it be of any use to anyone. I use it for keeping an engineering journal at work but it can be easily used for taking notes related to a book you're reading or even a course at school.

[https://gitlab.com/shanedora/bornstellar](https://gitlab.com/shanedora/bornstellar)

Cheers\~S

/r/django
https://redd.it/arll1o