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Creating a Lazy Query

You are asked to provide details on the range of electric vehicles for each model for a pre-sales opportunity. As you only need a subset of columns from the CSV you want to write this as a lazy query to take advantage of query optimization.

Cet exercice fait partie du cours

Introduction to Polars

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Exercice interactif pratique

Essayez cet exercice en complétant cet exemple de code.

# Select the columns with a lazy query
ev_df = ____("electric_vehicles.csv").____

# Execute the lazy query
print(____)
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