The August BangPypers meetup was hosted at McKesson Compile, where we had four talks: The Evolution of L5: Compile’s Spark-Based ETL Framework, Feedback in LLMs, DSPy – Stop Prompting, Start Programming LLMs, and Why t-strings are better than f-strings in Python. We also had an announcement about the upcoming MariaDB Hackathon.

Malavika Menon started the event with The Evolution of L5: Compile’s Spark-Based ETL Framework, where she walked us through the design philosophy and performance improvements of L5, showing how the framework leverages Spark to streamline data pipelines more efficiently.

Suhas Gupta followed with Feedback in LLMs, explaining why feedback mechanisms are essential for improving LLM performance, reliability, and user alignment, and how these feedback loops can be practically implemented.

Ankur Gupta then presented DSPy – Stop Prompting, Start Programming LLMs, introducing DSPy as a structured approach to treating LLMs like programmable modules—moving away from ad-hoc prompt tweaks toward modular, maintainable pipelines.

Tushar Sadhwani delivered a lightning talk on Why t-strings are better than f-strings in Python, highlighting the new t-strings feature coming in Python 3.14 and how it improves string interpolation.

The meetup concluded with the MariaDB Hackathon announcement, introducing the upcoming community hackathon focused on MariaDB development and collaboration.

A big thank you to all our speakers — Malavika, Suhas, Ankur, and Tushar — as well as to our wonderful attendees and our venue partner McKesson Compile for making this meetup a success. Stay tuned for more events and knowledge sharing in the months to come!

To stay updated with our future events and discussions:

• Follow us on Twitter/X - @bangpypers
• Join our Discord community: Discord Invite
• Follow our meetup schedules: Meetup Page
• Subscribe to our mailing list: Mailing List
• Follow us on Linkedin - @bangpypers