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Add example same correlation in pandas.Series.corr documentation #59591

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Aug 25, 2024
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Add example same correlation in pandas.Series.corr documentation #59591

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7 changes: 7 additions & 0 deletions pandas/core/series.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2619,6 +2619,13 @@ def corr(
>>> s2 = pd.Series([1, 2, 3], index=[2, 1, 0])
>>> s1.corr(s2)
-1.0

If the input is a constant array, the correlation is not defined in this case,
and ``np.nan`` is returned.

>>> s1 = pd.Series([0.45, 0.45])
>>> s1.corr(s1)
nan
""" # noqa: E501
this, other = self.align(other, join="inner")
if len(this) == 0:
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