Sentiment Analysis application created with Python and Dash, hosted at
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Social Sentiment Dash Application

Live-streaming sentiment analysis application created with Python and Dash, hosted at

application example

Dash Tutorials

This application was created in conjunction with the Dash tutorial series.

Repo Contents:

  • - This is currently the main front-end application code. Contains the dash application layouts, logic for graphs, interfaces with the database...etc. Name is descriptive of the overall state of code :) ...this code is setup to run on a flask instance. If you want to clone this and run it locally, you will be using the
  • - If you wish to run this application locally, on the dev server, run via this instead.
  • - This should run in the background of your application. This is what streams tweets from Twitter, storing them into the sqlite database, which is what the file interfaces with.
  • - Meant for many configurations, but right now it just contains stop words. Words we don't intend to ever count in the "trending"
  • - For caching purposes in effort to get things to run faster.
  • - A script to truncate the infinitely-growing sqlite database. You will get about 3.5 millionish tweets per day, depending on how fast you can process. You can keep these, but, as the database grows, search times will dramatically suffer.

Quick start

  • Clone repo
  • install requirements.txt using pip install -r requirements.txt
  • Fill in your Twitter App credentials to Go to to set that up if you need to.
  • Run to build database
  • If you're using this locally, you can run the application with the script. If you want to deploy this to a webserver, see my deploying Dash application tutorial
  • You might need the latest version of sqlite.
sudo add-apt-repository ppa:jonathonf/backports
sudo apt-get update && sudo apt-get install sqlite3
  • Consider running the from time to time (or via a cronjob), to keep the database reasonably sized. In its current state, the database really doesn't need to store more than 2-3 days of data most likely.

Tips for Running on Server

  • You can use Gunicorn to run the server
gunicorn dash_mess:server -b -w 4


Want to help contribute???

  • Code is ugly. Low hanging fruit is just making the code not so ugly. Up to this point, I've just been in "make it work" mode.
  • App is ugly. I am not a designer. This app is prettttttyyyyyy gross. Think you have a better design? Halp.
  • Click-able related terms and trending terms would be nice. I tried, but failed at this. It'd be cool to see a related term, and be able to just click on it, and this becomes the new searched term, for example.
  • The interactive search is cool, but also does a search in the database per-character. It would be nice if it didn't search per key-press. Not sure I want a search button, I like the streamlined interactivity, but maybe wait 0.2 seconds or something without any new keypresses to perform the search? Something like that might help with speeds. I really do not know the best option here, I just know this isn't idea.
  • Other manipulations or ideas for interactivity? Feel free to show them in a PR.


The speed of the application, especially with a database with 10's of millions of records is thanks entirely to Daniel Kukiela who helped us to convert from regular sqlite to using fts, helping with the queries, new database structure, caching, and more.

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