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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 exercício faz parte do curso

Data Transformation with Polars

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Instruções do exercício

  • 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".

Exercício interativo prático

Experimente este exercício completando este código de exemplo.

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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