[b]"What's the most efficient method for parsing data from different file formats?"[/b] or [b]"How do you handle e

If you’re dealing with a ton of files, consider DuckDB. It lets you query CSV, JSON, and Parquet directly without loading them into memory first.

For edge cases, I’ve started using Great Expectations to define data contracts. It’s a bit of setup, but catches problems early.

Also, +1 for pandas. It’s not perfect, but it’s saved me so many times.