Converting column data types
You're building a beauty product recommendation app and need to analyze customer reviews. The dataset contains ratings from 1 to 5, but they're stored as floating-point numbers in the CSV file. To filter reviews by exact rating values, you'll need to convert them to whole numbers first.
polars is loaded as pl. The DataFrame reviews is available with columns including category, detail, review, rating, size, and price.
Deze oefening maakt deel uit van de cursus
Data Transformation with Polars
Oefeninstructies
- Convert the
ratingcolumn to integers.
Praktische interactieve oefening
Probeer deze oefening eens door deze voorbeeldcode in te vullen.
# Convert the rating column to integers
reviews.with_columns(
pl.____("rating").____(pl.Int64)
)