Inspecting numeric range

Back to the movie dataset from the streaming startup. Before you downcast vote_count and budget to smaller dtypes, check their maximum values and compare them against the upper bounds of smaller integer types. This shows whether 32-bit (or 16-bit) is safe.

This exercise is part of the course

Scaling and Optimizing Data Pipelines with Polars

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Exercise instructions

Compute the max of vote_count and budget.
Show the upper bound of an Int32 and an Int16 version of budget.

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

result = movies.select(
    # Largest vote_count
    pl.col("vote_count").____().alias("vote_count_max"),
    # Largest budget
    pl.col("budget").____().alias("budget_max"),
    # Upper bounds of smaller dtypes
    pl.col("budget").cast(pl.Int32).____().alias("budget_int32_upper"),
    pl.col("budget").cast(pl.Int16).____().alias("budget_int16_upper"),
)
print(result)

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