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#3191: fix round() docs and docstring.

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Georg Brandl 2008-07-01 20:39:59 +00:00
parent 13b6d0df63
commit 809ddaaafb
2 changed files with 9 additions and 5 deletions
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10
Doc/library/functions.rst
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@ -964,11 +964,15 @@ are always available. They are listed here in alphabetical order.
.. function:: round(x[, n]) .. function:: round(x[, n])
Return the floating point value *x* rounded to *n* digits after the decimal Return the floating point value *x* rounded to *n* digits after the decimal
point. If *n* is omitted, it defaults to zero. Values are rounded to the point. If *n* is omitted, it defaults to zero. Delegates to
``x.__round__(n)``.
For the built-in types supporting :func:`round`, values are rounded to the
closest multiple of 10 to the power minus *n*; if two multiples are equally closest multiple of 10 to the power minus *n*; if two multiples are equally
close, rounding is done toward the even choice (so, for example, both 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 ``round(0.5)`` and ``round(-0.5)`` are ``0``, and ``round(1.5)`` is ``2``).
``2``). Delegates to ``x.__round__(n)``. The return value is an integer if called with one argument, otherwise of the
same type as *x*.
.. function:: set([iterable]) .. function:: set([iterable])

4
Python/bltinmodule.c
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@ -1726,8 +1726,8 @@ PyDoc_STRVAR(round_doc,
"round(number[, ndigits]) -> floating point number\n\ "round(number[, ndigits]) -> floating point number\n\
\n\ \n\
Round a number to a given precision in decimal digits (default 0 digits).\n\ Round a number to a given precision in decimal digits (default 0 digits).\n\
This returns an int when called with one argument, otherwise a float.\n\ This returns an int when called with one argument, otherwise a the\n\
Precision may be negative."); same type as the number. ndigits may be negative.");
static PyObject * static PyObject *