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DOC: Add security note for Excel export with formula cells #60939

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DOC: Add security note for Excel export with formula cells #60939

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5b0b12c
DOC: Add security note for Excel export with formula cells
Feb 16, 2025
e7476d3
more descriptive note on excel formula treatment
Feb 21, 2025
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12 changes: 12 additions & 0 deletions pandas/core/generic.py
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Expand Up @@ -2252,6 +2252,18 @@ def to_excel(
and cell character count does not exceed Excel's limitations.
All other limitations must be checked by the user.

Excel treats any cell starting with ``=`` as a formula, which can pose security
risks. To store such content as plain text, you can either:

* Prepend an apostrophe to the value, e.g. ``"'=foobar"``
* For ``xlsxwriter``, disable formula interpretation:

.. code-block:: python

df.to_excel(
"path.xlsx", engine_kwargs={"options": {"strings_to_formulas": False}}
)

Examples
--------

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