Extracting the hour component
With the datetime properly parsed, you want to identify when bike demand peaks during the day. To compare rentals across different hours, you need to extract the hour component from each timestamp.
polars is loaded as pl. The DataFrame bikes is available with the time column already parsed as a Datetime.
Cet exercice fait partie du cours
<cours>Data Transformation with Polars</cours>Instructions de l’exercice
- Extract the hour from the
timecolumn and name the new columnhour.
Exercice interactif pratique
Essayez cet exercice en complétant ce code d’exemple.
# Extract the hour from the time column
bikes.with_columns(
pl.col("time").____.____().____("hour")
)