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Question, Tips and Tricks, Best Practices on Python Programming Language
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I made A Reddit Video Website.

My Website: https://vreddit.up.railway.app

This website fetcher data from reddit and presents the Videos in a youtube style.

You can Also Visit subreddits by going to sub search and also can search on whole reddit.

The above Version returns only SFW Videos For nsfw visit https://indianwebseries-hathori.koyeb.app/



Please Give Your feedbacks and also share your experiance. And It will be great if you can me suggestions.

/r/flask
https://redd.it/10f0h82
Web app with JavaScript

Hi!

I need some advice. For my portfolio I want to build a web app for my national sports team. A bit like a news website but with some more features. I know Flask already and want to work on my JS skills also. I get confused when reading to use Flask for the backend and JS for frontend. I built Flask only apps without any JS. What will be different when using JS too? Are redirects, form submissions, validations, etc.. still handled by Flask? Do people still use jinja and what would be things I've done normally with Flask and now with JS?

Thank you!

/r/flask
https://redd.it/10ephsw
Is it Bad to have gunicorn --reload option enabled in Production?

Is there any downside to having the --reload option enabled for Gunicorn in production? For example, does it require additional memory or CPU or anything? I imagine it must have to poll for changes to files.

/r/flask
https://redd.it/10ek15x
I created some code to test the search functionality for elasticsearch to have a better understanding of the code. I wrote the code quickly so it is crappy code but it mostly runs . The problem is when I run the code and click search nothing appears. I assume it is the html causing the problems.

Can someone help fix the errors?

​

I am following this tutorial https://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-xvi-full-text-search

​

​

​

To save time here is my environment.yaml code

name: py
channels:
- defaults
dependencies:
- python
- flask-wtf
- flask-sqlalchemy
- flask-login
- elasticsearch
- flask-migrate
- bcrypt
prefix: C:\Users\user\Anaconda3\envs\py

Also of important note I just want to state that I manually added the Post columns by using the code below in the command line.

​

from app import db, app
from app import User, Posts
with app.appcontext():
post = Post(title='The Second Posts', body='Here is the body text')

&
#x200B;

I also tested to see if the column was added and it seems to be by using the example below.

&
#x200B;

from app import Post
post = Post.query.filter
by(body='Here is the body text').first( )
print(post)
print(post.title)


/r/flask
https://redd.it/10d1zgg
Wednesday Daily Thread: Beginner questions

New to Python and have questions? Use this thread to ask anything about Python, there are no bad questions!

This thread may be fairly low volume in replies, if you don't receive a response we recommend looking at r/LearnPython or joining the Python Discord server at https://discord.gg/python where you stand a better chance of receiving a response.

/r/Python
https://redd.it/10erylo
How often do you guys use Lambda?

I'm just curious as if it's really necessary and if I should learn it. Thank you for your time!

/r/Python
https://redd.it/10ey6cw
stacked quantiles

This is going to be niche, but just in case. I use this code a lot, so I uploaded it. For those of us who work with pixels and such where you might have 10k of the same value.

stacked-quantile · PyPI

ShayHill/stacked\_quantile: Treat weighted values as multiple values. (github.com)

​ 'Stacked' quantile functions. Close to weighted quantile functions.

These functions are used to calculate quantiles of a set of values, where each value has a weight. The typical process for calculating a weighted quantile is to create a CDF from the weights, then interpolate the values to find the quantile.

These functions, however, treat weighted values (given integer weights) exactly as multiple values.

So, values (1, 2, 3) with weights (4, 5, 6) will be treated as

(1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3) If the quantile falls exactly between two values, the non-weighted average of the two values is returned. This is consistent with the "weights as occurrences" interpretation. Strips all zero-weight values, so these will never be included in such averages.

If using non-integer weights, the results will be as if some scalar were applied to make all weights into integers.

This "weights as occurrences" interpretation has

/r/Python
https://redd.it/10ew7am
Secret messages in coding?

Is it possible to make short secret that only could be read when ran or by other programmers? I’m new to python, and I want to make a album cover that could hold a hidden text or something of the sort in a small bit of code. Just an idea I’m throwing around

/r/Python
https://redd.it/10eso5l
Delivery driver tip tracker: tkinter and openpyxl

Greetings, im current a delivery driver for a pizza chain and I wanted a way to track my tips, so I created a gui interface that allows me to input data and add it to an excel sheet, im really happy with this project as not only didnt I create it, I was able to recreate it in an object oriented way, if you have any criticism or anything I can improve on let me know!

youtube video on the project

github of the code

/r/Python
https://redd.it/10fb96m
A heavily tested (2k lines) and commented classic Red Black Tree implementation in Python and Ruby. Great for learning the material.

Back when I was trying to implement the structure, I could not find any open source implementations that were well written and commented.
I did not manage to find any implementation that had any significant amount of tests and as such was not sure if it even worked correctly.
I tried my best to describe the different operations needed thoroughly and have written a lot of tests (functional too) covering all operations, with drawn out trees in comments.

https://github.com/stanislavkozlovski/Red-Black-Tree

Any feedback is greatly appreciated :)

/r/Python
https://redd.it/10fev4r
Using Gaussian Elimination instead of a Monte Carlo simulation?

Using Python or R (or another program), let’s say I have two CSV sheets. One has a sample and the other is a reference sheet ( illustrated here: https://i.imgur.com/duNFu3w.jpg <-Sample

https://i.imgur.com/Ar9lO9Y.jpg <- Reference ). The sample is represented by numbers under element categories (Iron, Copper etc).

I want to get the sample classified in terms of percentages of the reference sheet categories. The output would be something like this for example: sample is “ 71% Category15, 8% Category9, 21% Category6. “

I have an existing Monte Carlo simulation in R and the process is slow and doesn’t yield results that are too accurate.
What alternatives exist to using a Monte Carlo simulation on this?


An existing Monte Carlo simulation would run combinations of the categories in the reference sheet to reach a combination similar to that in the Sample, so preferably the alternative would have a computationally similar output.

—— —— —— —— ——- —— —— ——- ——- ———- —-

I posted the question in another forum and received the following reply. Can someone give their opinion in terms of accuracy? (ie: do you think it will work given the problem above?)


“ Unless I didn't understand the problem at hand, linear algebra could

/r/Python
https://redd.it/10fckk2
What's your favourite thing about automated tests?

Hi there. I'm curious about how developers feel about writing automated tests like unit tests. What's the one thing you like, or have found helpful, about writing automated tests like unit test?

/r/Python
https://redd.it/10f935p
Can Flask Simply Run My Python Code?

Hi all,

I have a fairly simple python script (its a single class, about 200 lines) that helps me do my job and I want to share with members of my team and am unsure the best way to do this.

Some (important?) details:

1. The program does have a few user inputs and will return a single word/number (based on the inputs)
2. The other members of my team are NOT technical users - I would not trust them with having to install python or running anything from the terminal or an IDE.
3. security is not any security concerns here - anyone can see the source code (but am curious if you are able to see source code in flask)

I'm fairly proficient in python, but have never wanted to share a program with someone who's unable to run a .py file. I think a web app might be the best way to allow the non-technical users to access the program, but am unsure what might be the simplest way to create that? Currently I run the program in my terminal if that helps.

Would this be a good use case for Flask? Most tutorials I see online for flask seem to be blogs

/r/flask
https://redd.it/10fftz3
AMA: Ask me how I built amigoingonholiday.co.uk - Friday 20th Jan. at 18:00 GMT

Hi everyone,

I'm Dom (aka: u/SecondaryPath), the author of https://amigoingonholiday.co.uk. I'm hosting an AMA with members of the r/Flask community this Friday (20th Jan. 2023) at 18:00 GMT.

Feel free to ask me questions on how I built this Flask application, as well as anything else Flask/Python/Web Dev related!

YouTube live link: https://www.youtube.com/watch?v=4eCHYvcbAhg

/r/flask
https://redd.it/10fe89u
how can I redirect to another page from an html template in flask

I have a template where I have a back button as follows:

<div class="ui basic segment center aligned">

<i class="link arrow circle left big icon" onclick="handleBackButton()"></i>

</div>

At the moment, this handler just calls some dummy JS method but what I would like to do is redirect to the `index` page on flask. I know from the python code, I can call something like:

render_template("index.html")

or

redirect(url_for("index"))

I wonder if I can do the same from the HTML side of things. I could find many examples of doing this from the python side but nothing from the template side.

/r/flask
https://redd.it/10fejrp
I'm creating an app based on Flask, Zappa, Plotly/Dash and AWS Lambda. Do you have any examples/templates/python codes of apps built on Flask? The idea is create a simple one-page website with a sign up/sign in section and an app based on a csv file stored in s3 (It will be displayed through Dash).



/r/flask
https://redd.it/10f4g33