Calculating weekly rental totals
Beyond filtering, you often need to aggregate data by time periods. To spot trends across July and compare week-over-week demand, calculate weekly rental totals.
polars is loaded as pl. The DataFrame bikes is available, sorted by time.
Este exercicio faz parte do curso
Data Transformation with Polars
Instruções do exercicio
- Group the data by week using
group_by_dynamic(). - Calculate the sum of
rentalsand name ittotal_rentals.
exercicio interativo prático
Tente este exercicio completando este código de exemplo.
# Group the data by week
bikes.____("time", every="____").agg(
# Calculate the sum of rentals
pl.col("rentals").____().alias("____")
)