Djangobook.com Has anyone read the book?

I am wondering if this book is worth buying? I have been reading the free tutorial and it is very good learning tool so far, better than the documentation because it is human readable.

/r/djangolearning
https://redd.it/7nzniv

[N] TensorFlow 1.5.0 Release Candidate
https://github.com/tensorflow/tensorflow/releases/tag/v1.5.0-rc0

/r/MachineLearning
https://redd.it/7o21w7

Hacking WiFi to inject cryptocurrency miner to HTML requests with Python
http://arnaucode.com/blog/coffeeminer-hacking-wifi-cryptocurrency-miner.html

/r/Python
https://redd.it/7o23lb

Shared db with restricted views per user.

I have a db that is to be shared. Where if a specific object has a certain value I need specific users to be able to see and edit it. No other users can see or edit these objects.


I am trying to understand what way one should do this. I don't know django very well. I am currently looking at conditionals for views. Not sure if that is even possible given i don't know if conditionals on views can filter objects from models.


If anyone could point me in the right direction I would greatly appreciate it.

/r/djangolearning
https://redd.it/7nqkiu

Wrecking ball animation in 14 lines of code in Blender 3d
http://slicker.me/blender/wreck.htm

/r/Python
https://redd.it/7o2xy3

Community Curated Flask Resources [2018]
https://hackr.io/tutorials/learn-flask

/r/flask
https://redd.it/7o2t14

The power of class based views

So the main (or one of them) reason to use class based views is to be able to display a list of objects in IndexView, and the details of that object in DetailView. But what if after the user clicks on an object in IndexView, I want to display another list of objects, and then when the user clicks on that, it will display details.

Example:

IndexView display's a list of categories. When the user clicks on a category it will display a list of sub-categories. When a subcategory is clicked, it will display details of that subcategory.

Thanks and sorry if my question is to basic!

/r/django
https://redd.it/7o15do

Using Django with Discourse

Does anyone have experience integrating Discourse into their Django project? Was it difficult?

/r/django
https://redd.it/7o7dn0

[AF] Where do you store abstractions for Redis commands? Same models folder as DB?

Hey everyone, I'm curious where you store functions that abstract out calls to redis. For example, I'd rather have a command like `active_users = get_active_users()` in my API controllers than long & ugly `active_users = json.loads(r.hget('users', 'active') or '[]')`calls. It feels to me like these should be organized alongside your models, but I'm not sure if this is common practice... or even what the common practice even is.

Thanks for any insight you can provide!

/r/flask
https://redd.it/7nzksv

Launching Pyinstrument 2.0
http://joerick.me/posts/2017/12/15/pyinstrument-20/

/r/Python
https://redd.it/7o6fav

Groups as roles

Are django groups enough for a straightforward role based auth implementation?

/r/django
https://redd.it/7nv2z3

Python® Notes for Professionals book
http://books.goalkicker.com/PythonBook/

/r/Python
https://redd.it/7o3kl4

Related, does this ERD behind my flask app makes sense?

https://www.lucidchart.com/invitations/accept/74564e9f-4d85-422f-b217-a4ae4db92c0b

Above is My Lucidchart ERD which you can modify, if you do please make notations.

JPG: https://drive.google.com/open?id=1cN7nyYYlKG1D0HXCAWzSTM5xqAXoA0gK

Above is the ERD of the flask webapp i am developing. I am really new to python, flask and databases. So far i have only the listing table setup where i have several scrapers daily enter data into the table.

That side of my projects works as i want. Now i am creating a GUI webapp to visualize the data. Did some testing and have a bootstrap layout working. Now i have to rebuild the database from all the lose parts i have. I want to do this right this time so i dont waste any time forward with bad design.

So this is the setup.
Scraper scrapes specific url from a brance, this brance is a child of a company because some companies have serveral brances.

The scraper puts the new found listings in the listing table, and updates the remove/sold date if it can't find the listing or finds a soldmarker on the listing. The new thing i added is a sperate table for pricechanges so i can track if there are pricechanges and retrieve when.

* Every Listing has a brance and company
* Every company has a brance (even if they only have one) but not every compay has listings (if i don't track their listings but they subscribe to track others(targets))

I have the website login seperate because i like to keep it like this, it would let me add users without whole companies.

Did i choose the right 'intermediate' table for the price changes and for the targets (a companie can track several brances). ?

Also did i use the right crowfood notation? I am studying my ass off for 2 days on database/design and modelling them in sqlalchemy and i has been very hard to grasp it fully.





/r/flask
https://redd.it/7nth1d

A SQLite Tutorial with Python
http://stackabuse.com/a-sqlite-tutorial-with-python/

/r/Python
https://redd.it/7o2ucx

How to start learning Django?

I have a fair experience in programming in C++ and I also know HTML and a bit of CSS. Any resources from where can I start learning?

/r/djangolearning
https://redd.it/7o92c2

Really??

/r/Python
https://redd.it/7oaay5

Python framework for data transport, parsing, ETLing

I'm struggling with setting up data ingestion ETL pipelines/processing pipelines/architectures.

I've been playing around with Apache Nifi and like the functionality of the job scheduling, the processors of things like "GetFile", "TailFile", "PutFile" etc. but to me it falls short quickly when you have to do any type of manipulation to the data. For example, if you are reading a CSV file that isn't ideal (e.g. no quote around a string but you know its the last column in each row), you have to write these god awful RegEx to parse the data to send it to the next stage of the pipeline. The same goes for any of the other tools like LogStash/Streamsets etc.

It almost feels like I need something of a "programmable" nifi/libarary/framework. I can tell the framework to simply "go tail these sets of files with X parameters" on this schedule, when it runs I get the context of that information back similar to nifi but I have it available directly in python (can be any just an example) where I can use pandas or some other libraries to manipulate that data as I see fit, do my processing on it, and then call other "nifi like" processors from within python directly to putfile, insert into a database, pass it to a message queue, or some other action.

With something like how I describe, I don't have to worry about writing all of the boilerplate of scheduling, running the job, file I/O. I simply call a process that Tails a file and it send it back to me when it gets something. I do the work on the data and then send it to the next stage. Everything is contained within code and I don't have to worry about "scripts" to handle little silos.

I do not feel that "pandas, odo, and csv "modules are the answer. I feel some combination of all of those tools + some framework of processors, job runners, where you are working within that frameworks context to move and send data around and manipulating it with those tools would be closer to the answer.

Is there any type of framework out there that will do this?

/r/Python
https://redd.it/7obtrz

Django JET updated to support Django 2+
https://github.com/geex-arts/django-jet

/r/django
https://redd.it/7obj51

Where do I put my own object instances?

Hi,
i'm woking with django channels and I have realtime data incoming into my django server wich I then write into a custom object. When I call update() on my object it submits the Data to a Vue.js frontend.

It works but I'm not shure where to put the instance of my object. I'm asking because on a server farm my guess is that the object would be in different RAMs and therefor have differnt values, is this correct? Where do I instaniate objects so that they are handled properly?

/r/django
https://redd.it/7oc1bt

Unsure which flask user system to use

I'm building a website and I need a user system. I have found multiple libraries that handle this but I'm having some difficulties finding the right one. I thought some of you might have experience with these.

I'm looking for a library that has all the basic stuff like login, logout, remembering the user's session, etc. But I'm also looking for some customisability like using something different for confirmations (when you forgot your password for example) than emails.

Help is much appreciated.

/r/flask
https://redd.it/7obuuc