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Diffstat (limited to 'Doc/library/functions.rst')
| -rw-r--r-- | Doc/library/functions.rst | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst index e54faae..f5ff69e 100644 --- a/Doc/library/functions.rst +++ b/Doc/library/functions.rst @@ -1095,6 +1095,14 @@ available. They are listed here in alphabetical order. example, ``round(0.5)`` is ``1.0`` and ``round(-0.5)`` is ``-1.0``). + .. note:: + + The behavior of :func:`round` for floats can be surprising: for example, + ``round(2.675, 2)`` gives ``2.67`` instead of the expected ``2.68``. + This is not a bug: it's a result of the fact that most decimal fractions + can't be represented exactly as a float. See :ref:`tut-fp-issues` for + more information. + .. function:: set([iterable]) :noindex: |