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Claude loved pandas, at least around 4.5 opus. I had to keep reminding it to use polars instead. I wonder if it’s changed since.

• minimaxir 5d ago
  You could put in your AGENTS.md/CLAUDE.md for it to use polars. Modern LLMs use it just fine.
• viccis 5d ago
  These days it just writes its own DataFrame library for you