Hemangi Karchalkar
Hemangi is a passionate Python developer and community contributor. She enjoys simplifying complex topics like Pydantic, FastAPI, and testing, and has spoken at events such as GIDS, PyCon Italy, and PgCon Hong Kong. She believes in building strong developer communities and helping others grow through mentoring and knowledge-sharing.
Session
Pydantic v2 is fast, elegant, and thoughtfully redesigned — but migrating a real production system isn’t always as simple as upgrading a dependency. In our project, the v1 → v2 journey started with excitement and quickly turned into detective work: broken validators, unexpected serialization differences, and a few “why is this failing?” moments.
In this talk, I’ll walk you through how we navigated the migration, what we refactored, what we kept, and which patterns saved us hours of debugging. If you’ve been postponing your migration or don’t know where to begin, this session will give you a clear, practical path forward.