I also wanted to focus on a local implementation, that does not require me to sign up for a big data service, such as BigQuery. To get started, make sure that you have Python 3 installed, along with the required packages - you can execute python3 -m pip install -r requirements.txt to get the environment set up and ready. There is also an issue with the fact that the sentiment model is not trained on developer content, so focusing on subreddits that are technical sometimes yields sub-optimal outputs.