Expressions
Polars expressions describe column operations and run in parallel.
What you will be able to do
- Use pl.col.
- Chain expressions.
- Avoid Python loops.
In plain English
Polars expressions describe column operations and run in parallel.
- Use pl.col.
- Chain expressions.
- Avoid Python loops.
import polars as pl
df = pl.DataFrame({'course': ['HTML', 'CSS'], 'minutes': [12, 18]})
print(df.select(pl.col('minutes') * 2))Your turn
EasyExplain it back
Answer from memory: Which object references a column?
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Knowledge checkQuestion 1
Which object references a column?
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