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docs(python): Fix column name output in example of DataFrame.map_rows #18227

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Aug 16, 2024
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docs(python): Fix column name output in example of DataFrame.map_rows #18227

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20 changes: 10 additions & 10 deletions py-polars/polars/dataframe/frame.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7003,17 +7003,17 @@ def map_rows(

Return a DataFrame with a single column by mapping each row to a scalar:

>>> df.map_rows(lambda t: (t[0] * 2 + t[1])) # doctest: +SKIP
>>> df.map_rows(lambda t: (t[0] * 2 + t[1]))
shape: (3, 1)
┌───────┐
│ apply │
│ --- │
│ i64 │
╞═══════╡
│ 1 │
│ 9 │
│ 14 │
└───────┘
┌─────┐
│ map │
│ --- │
│ i64 │
╞═════╡
│ 1 │
│ 9 │
│ 14 │
└─────┘

In this case it is better to use the following native expression:

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