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DOC: Update the usage of rtol and atol arguments #59434

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5 changes: 4 additions & 1 deletion pandas/_testing/asserters.py
Original file line number Diff line number Diff line change
Expand Up @@ -1158,7 +1158,10 @@ def assert_frame_equal(
Specify how to compare internal data. If False, compare by columns.
If True, compare by blocks.
check_exact : bool, default False
Whether to compare number exactly.
Whether to compare number exactly. If False, the comparison uses the
relative tolerance (``rtol``) and absolute tolerance (``atol``)
parameters to determine if two values are considered close,
according to the formula: ``|a - b| <= (atol + rtol * |b|)``.

.. versionchanged:: 2.2.0

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