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| author | Victor Stinner <vstinner@python.org> | 2020-02-07 22:42:51 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-02-07 22:42:51 (GMT) |
| commit | dc7a50d73a3d16918529669ff7b8783c08cff090 (patch) | |
| tree | 03dd057164d756447338063473d5559a1fc9c957 /Doc/library | |
| parent | 60ac6ed5579f6666130fc264d3b748ee9575e3aa (diff) | |
| download | cpython-dc7a50d73a3d16918529669ff7b8783c08cff090.zip cpython-dc7a50d73a3d16918529669ff7b8783c08cff090.tar.gz cpython-dc7a50d73a3d16918529669ff7b8783c08cff090.tar.bz2 | |
bpo-39350: Fix fractions for int subclasses (GH-18375)
Fix regression in fractions.Fraction if the numerator and/or the
denominator is an int subclass. The math.gcd() function is now
used to normalize the numerator and denominator. math.gcd() always
return a int type. Previously, the GCD type depended on numerator
and denominator.
Diffstat (limited to 'Doc/library')
| -rw-r--r-- | Doc/library/fractions.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Doc/library/fractions.rst b/Doc/library/fractions.rst index d3a4276..a4d006e 100644 --- a/Doc/library/fractions.rst +++ b/Doc/library/fractions.rst @@ -84,6 +84,10 @@ another rational number, or from a string. The :class:`Fraction` constructor now accepts :class:`float` and :class:`decimal.Decimal` instances. + .. versionchanged:: 3.9 + The :func:`math.gcd` function is now used to normalize the *numerator* + and *denominator*. :func:`math.gcd` always return a :class:`int` type. + Previously, the GCD type depended on *numerator* and *denominator*. .. attribute:: numerator |