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DOC: Add example for df.map without lambda #56363

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Dec 6, 2023
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DOC: Add example for df.map without lambda #56363

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8 changes: 8 additions & 0 deletions pandas/core/frame.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10339,6 +10339,14 @@ def map(
0 NaN 4
1 5.0 5

It is also possible to use `map` with functions that are not
`lambda` functions:

>>> df.map(round, ndigits=1)
0 1
0 1.0 2.1
1 3.4 4.6

Note that a vectorized version of `func` often exists, which will
be much faster. You could square each number elementwise.

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