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  3. Scaling and Optimizing Data Pipelines with Polars
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Downcasting numeric columns

Now that the ranges look safe, cast the numeric columns to smaller dtypes. Use Int32 for the integer columns and Float32 for the floats where lower precision is still good enough for summary stats.

The movies DataFrame is preloaded for you.

지침

100 XP
  • Cast vote_count and budget to pl.Int32.
  • Cast runtime and vote_average to pl.Float32.