In this week's Python coding challenge, participants are invited to create a basic Flask application that integrates data visualization using Bokeh, with the option to deploy the app on Heroku for additional practice. The challenge, presented by Michael Herman from Real Python, encourages breaking down the task into manageable steps such as building a basic Flask app, testing it locally, creating a visualization, and integrating it with Flask, followed by further testing. Participants are provided with resources including a simple tutorial on embedding a Bokeh bar chart into a Flask app, user guides, and the option to use various datasets for their visualizations. For those looking for an extra challenge, deploying the app to Heroku is suggested, with instructions available on forking the PyBites challenges repository and submitting code via Pull Request for community review.