For people who live in Cleveland, are there any PyCon events that are walk-in (i.e. free for poor undergrads)?



/r/Python
https://redd.it/8ik019

Fabric 2.0 released, includes Python 3 compatibility
http://docs.fabfile.org/en/latest/upgrading.html#upgrading

/r/django
https://redd.it/8ikmwm

Advice o two-step user registration process with SMS verification

My Django app uses a subclass of Usercreationform, with a char field for an SMS code requested via ajax. I'm using the mobile # as the username.

When submitted, if form.is\_valid and the sms code submitted is the one sent \(saved in db\), form is saved and the newly created user is logged in.

I am breaking this up into 2 steps to prevent getting flooded with malicious/frivolous sms requests. The sms field is replaced with a django\-simple\-captcha field. If form.is\_valid, a user is created with is\_active=False. The request is then redirected to a page with a one\-time url to request and submit an sms code to verify account, which flips user.is\_active to True if successful.

I'm just realizing that a vulnerability is created if someone maliciously "registers" a whole bunch of real mobile numbers without verifying, and when the real owner of one of the numbers tries to register, my form subclassed from Usercreationform would complain that an account already exists with that username.

I guess I can do something on the frontend with JS to still make it 2\-step but submit the form in one go, and if everything is valid an active user gets created, otherwise nothing happens. But does Django have anything quick and simple that solves my problem?

Also, any general advice? I thought about rate limiting with Nginx my current structure instead. But what would be a sensible rate for user sign\-up? Something like 1r/s per IP seems way too high. But if I set a rate too restrictive, I run the risk of blocking potential customers behind a NAT with a mysterious error code.

Thanks!

/r/django
https://redd.it/8ik0ki

Practicality Beats Purity: Microservices vs Monoliths
http://tryexceptpass.org/article/practicality-beats-purity-3/

/r/Python
https://redd.it/8iikd3

Python 3 Cheat Sheet for Beginners

/r/Python
https://redd.it/8imrdt

Create GUI apps with Python in minutes
https://build-system.fman.io

/r/Python
https://redd.it/8imbya

[R] Full-body high-resolution Anime Generation with Progressive Structure-conditional GANs
http://dena.com/intl/anime-generation/

/r/MachineLearning
https://redd.it/8iky2y

Anyone wants to be my study-buddy for learning Flask?

Anyone wants to be my study-buddy for learning Flask using Miguel Grinberg's Flask Mega Tutorial?https://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-i-hello-world

Starting: May 14th

/r/flask
https://redd.it/8iiz6m

How to combat blog spam?

This is a bit of a meta post about r/python, rather than python itself. However, it seems to me that there is a very noticeable amount of blog spam, which I'll loosely define as having the following features:

* Poorly-written
* Unhelpful - sometimes just plain incorrect and misleading
* Heavily focused just on SEO

Have others noticed the same thing?

Can anything be done to limit the amount of blog spam? Require posts to be authorised by mods before going live? Other measures to be taken?

I just wanted to attempt to open it up for debate, so please discuss below, if this is appropriate.



/r/Python
https://redd.it/8in595

[D] ICML 2018 decisions are out
https://cmt.research.microsoft.com/ICML2018/Default.aspx

/r/MachineLearning
https://redd.it/8ioqrr

[R] Noisin: Unbiased Regularization for Recurrent Neural Networks
https://arxiv.org/abs/1805.01500

/r/MachineLearning
https://redd.it/8ipmx0

Wagtail Space US: a free, three day Wagtail event in Philadelphia
https://us.wagtail.space

/r/django
https://redd.it/8ir1ef

Pyre: Fast Type Checking for Python
https://www.facebook.com/notes/protect-the-graph/pyre-fast-type-checking-for-python/2048520695388071/

/r/Python
https://redd.it/8ip1pj

json post issue

Ok, so here's the problem. I have a Notes form. It posts the information properly but lets say I'd like to post another post right after I hit submit note. It won't post it and it will fill the url eg: " [http://app.com/ticket/1?body=](http://app.com/ticket/1?body=)blahblah&?method=add ". If I want to post again I have to refresh the page, What am I doing wrong?

Here's my JS.

$('#noteform').submit(function(e) {
e.preventDefault();
var csrf_token = "{{ csrf_token() }}";
var ticketid = "{{ ticket.id }}";
var twoSecMin = $.Deferred();

$.ajax({
url: '/repair/addNote',
dataType: 'json',
type: 'post',
contentType: 'application/json',
data: JSON.stringify( {
"method": 'add',
"body": $('#body').val(),
"ticketid": ticketid,
"private_note": $('#private_note').prop('checked')
}),
processData: true,
success: function( data, textStatus, jQxhr ){
$('#notes').load(' #notes');
$('#notecount').load(' #notecount');
$('input[type=text], textarea').val('');
$('input[type=checkbox]').prop("checked", false);
},
error: function( jqXhr, textStatus, errorThrown ){
console.log( errorThrown );
alert('Error Posting Note!');
}
});


$.ajaxSetup({
beforeSend: function(xhr, settings) {
if (!/^(GET|HEAD|OPTIONS|TRACE)$/i.test(settings.type) && !this.crossDomain) {
xhr.setRequestHeader("X-CSRFToken", csrf_token);
}
}
});

});

and this is my controller logic.

@ticket.route('/addNote', methods=["POST"])
def addNote():
json = request.get_json()
method = json['method']

if method == 'add':
body = json['body']
private = json['private_note']
tid = json['ticketid']

# Create note!
newnote = Notes(
created_by = 0,
is_private = private,
ticket_id = tid,
body = body,
)

db.session.add(newnote)
db.session.commit()

elif method == 'delete':
noteid = json['noteid']

# Delete note.
notetodelete = Notes.query.filter_by(id=noteid).first_or_404()

db.session.delete(notetodelete)
db.session.commit()

elif method == 'update':
return None

return jsonify(result='done')

/r/flask
https://redd.it/8is6qf

[P] TF-REX: AI learns to play Google Chrome's Dinosaur Game | No Emulators | All info in blogpost
https://www.youtube.com/watch?v=UM_wyrd0k-k

/r/MachineLearning
https://redd.it/8iujuu

Upload Progress Bar

Hi everyone,

I was wondering if you could recommend a progress bar that will work with file uploads in Django. I see that there are several available, and I've tried several without any success. I was wondering if you could recommend one that you've been able to get working.

Thanks!

/r/django
https://redd.it/8iu3sl

Django cms on AWS Lambda

Has anyone ever hosted a Django cms mezzanine or wagtail on AWS Lambda. If so I need some direction on to go about doing it effectively. Any pointers would be appreciated.

PS: I have hosted a simple Django based website on Lambda so I have elementary experience in this area.

/r/django
https://redd.it/8iv3lr

[Flask-SQLAlchemy] Querying association table in flask-sqlalchemy?

Let's say I have two models **Posts** and **Tags** and an association table **post_tags** that connects these models in a many-to-many relationship (one post can have one or many tags and each tag can have one or more posts attached to it):

post_tags = db.Table(
'post_tags',
db.Column('post_id', db.Integer, db.ForeignKey('posts.id'), primary_key=True),
db.Column('tag_id', db.Integer, db.ForeignKey('tags.id'), primary_key=True),
)

class Post(db.Model):
__tablename__ = 'posts'
id = db.Column(db.Integer, primary_key=True)
text = db.Column(db.Text, nullable=False)
created_at = db.Column(db.Integer, nullable=False)

class Tag(db.Model):
__tablename__ = 'tags'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String, unique=True, nullable=False)


I want to obtain the most frequently mentioned tags from the **post_tags** table. SQLite query for this roughly looks like:

SELECT tag_id, count(tag_id) FROM post_tags GROUP BY tag_id ORDER BY count(tag_id) DESC;

How can I accomplish this in SQLAlchemy? I am using Flask-SQLAlchemy extension and SQLite as a DB driver.

Edit: formatting and grammar

/r/flask
https://redd.it/8idv32

Can I host Django website where i currently host my Wordpress website?

I have a hosting service for 1 year but I use it to host Wordpress.Can i host my Django website on the server instead of the Wordpress?

What are the requirements to host Django?

/r/django
https://redd.it/8itn2j

PyCharm 2018.1.3 RC
https://blog.jetbrains.com/pycharm/2018/05/pycharm-2018-1-3-rc/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Pycharm+%28JetBrains+PyCharm+Blog%29

/r/Python
https://redd.it/8iuhu8

[AF] Pagination not working, has_next and has_prev always gives None

Hi, so as the title suggests I have a problem regarding pagination. Here is the code I have tried to use (taken from [Miguel Grinberg's tutorial](https://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-ix-pagination)).

def index():
"""View function for the index site, basically the main site.
Sorts posts by hotness"""
page = request.args.get('page', 1, type=int)
posts = Post.query.order_by(Post.hotness.desc()).paginate(
page, app.config['POSTS_PER_PAGE'], False)
next_url = url_for('index', page=posts.next_num) \
if posts.has_next else None
prev_url = url_for('index', page=posts.prev_num) \
if posts.has_prev else None
return render_template('index.html', title='Dopenet: You can do anything', posts=posts.items, next_url=next_url, prev_url=prev_url)

The index.html file is this:

{% extends "base.html" %}

{% block content %}
{% for post in posts if posts %}
{% include '_post.html' %}
{% endfor %}

{% if prev_url %}
<a href="{{ prev_url }}">Newer posts</a>
{% endif %}
{% if next_url %}
<a href="{{ next_url }}">Older posts</a>
{% endif %}

{% endblock %}

So I am guessing that both has_next and has_prev are giving `None` as a response, so hence no url for both prev and next.

What am I doing wrong and how can I fix this?

The rest of the code can be found here, if more context is needed:

https://www.github.com/ModoUnreal/Nuncio

/r/flask
https://redd.it/8ixivl