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.
本练习是课程的一部分
Data Transformation with Polars
练习说明
- Convert the
ratingcolumn to integers.
交互式实操练习
通过完成这段示例代码来试试这个练习。
# Convert the rating column to integers
reviews.with_columns(
pl.____("rating").____(pl.Int64)
)