Chaining multiple conditions

You can also chain multiple conditions together. The product team wants to categorize products as "Large", "Medium", or "Small" based on their size for shipping optimization.

Este ejercicio forma parte del curso

Data Transformation with Polars

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Instrucciones del ejercicio

Check if the "size" column equals "100ml" and return "Large".
Check if the "size" column equals "50ml" and return "Medium".
Return "Small" for all other sizes and name the column "size_category".

Ejercicio interactivo práctico

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reviews.with_columns(
  	# Check if size is "100ml" and return "Large"
    pl.when(pl.col("____") == "____").then(pl.lit("____"))
  
    # Check if size is "50ml" and return "Medium"
    .____(pl.col("size") == "____").then(pl.lit("____"))
  
    # Return "Small" for other sizes
    .____(pl.lit("____"))
    .alias("size_category")
)

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