Pandera — Data Validation for DataFrames Overview Pandera, the Python library for validating pandas and Polars DataFrames with expressive schemas. Helps developers define data contracts, validate data pipelines, and catch data quality issues before they corrupt downstream systems. Instructions Schema Definition Define column types, constraints, and checks: Using Schemas in Pipelines Custom Checks Polars Support Integration with Pytest Installation Examples Example 1: Setting up an evaluation pipeline for a RAG application User request: The agent creates an evaluation suite with appropriate me…