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DOC: Update doc strings to show pd.Panel has been deprecated #18956

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Dec 27, 2017
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DOC: Update doc strings to show pd.Panel has been deprecated #18956

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2 changes: 2 additions & 0 deletions pandas/core/frame.py
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Expand Up @@ -1403,6 +1403,8 @@ def to_panel(self):
Transform long (stacked) format (DataFrame) into wide (3D, Panel)
format.

.. deprecated:: 0.20.0

Currently the index of the DataFrame must be a 2-level MultiIndex. This
may be generalized later

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7 changes: 7 additions & 0 deletions pandas/core/panel.py
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Expand Up @@ -111,6 +111,13 @@ class Panel(NDFrame):
"""
Represents wide format panel data, stored as 3-dimensional array

.. deprecated:: 0.20.0
The recommended way to represent 3-D data are with a MultiIndex on a
DataFrame via the :attr:`~Panel.to_frame()` method or with the
`xarray package <http://xarray.pydata.org/en/stable/>`__.
Pandas provides a :attr:`~Panel.to_xarray()` method to automate this
conversion.

Parameters
----------
data : ndarray (items x major x minor), or dict of DataFrames
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