Replacing multiple patterns
The analytics team needs to calculate average product sizes, but the size column contains text values like "30ml" instead of numbers. You can replace multiple patterns at once to clean these values.
Este exercício faz parte do curso
Data Transformation with Polars
Instruções do exercício
- Replace
"30ml","50ml", and"100ml"in the"size"column with their numeric equivalents"30","50", and"100". - Cast the
"size"column to a 64-bit integer.
Exercício interativo prático
Experimente este exercício completando este código de exemplo.
# Replace size values with numeric strings
reviews.with_columns(
pl.col("size").str.____(["30ml","50ml","100ml"],["____","____","____"])
# Cast size column to integer
).____({"____":pl.Int64})