bpo-30940: Updating round() docs. (GH-6342)
diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst
index 3b05a3a..457e1c3 100644
--- a/Doc/library/functions.rst
+++ b/Doc/library/functions.rst
@@ -1329,11 +1329,12 @@
equally close, rounding is done toward the even choice (so, for example,
both ``round(0.5)`` and ``round(-0.5)`` are ``0``, and ``round(1.5)`` is
``2``). Any integer value is valid for *ndigits* (positive, zero, or
- negative). The return value is an integer if called with one argument,
- otherwise of the same type as *number*.
+ negative). The return value is an integer if *ndigits* is omitted or
+ ``None``.
+ Otherwise the return value has the same type as *number*.
- For a general Python object ``number``, ``round(number, ndigits)`` delegates to
- ``number.__round__(ndigits)``.
+ For a general Python object ``number``, ``round`` delegates to
+ ``number.__round__``.
.. note::