diff options
| -rw-r--r-- | Lib/fractions.py | 4 | ||||
| -rw-r--r-- | Lib/test/test_fractions.py | 10 | ||||
| -rw-r--r-- | Misc/ACKS | 1 | ||||
| -rw-r--r-- | Misc/NEWS.d/next/Library/2024-05-20-13-48-37.gh-issue-119189.dhJVs5.rst | 3 |
4 files changed, 12 insertions, 6 deletions
diff --git a/Lib/fractions.py b/Lib/fractions.py index f91b4f3..95adccd 100644 --- a/Lib/fractions.py +++ b/Lib/fractions.py @@ -877,8 +877,10 @@ class Fraction(numbers.Rational): # A fractional power will generally produce an # irrational number. return float(a) ** float(b) - else: + elif isinstance(b, (float, complex)): return float(a) ** b + else: + return NotImplemented def __rpow__(b, a): """a ** b""" diff --git a/Lib/test/test_fractions.py b/Lib/test/test_fractions.py index 28607ee..3c7780e 100644 --- a/Lib/test/test_fractions.py +++ b/Lib/test/test_fractions.py @@ -925,21 +925,21 @@ class FractionTest(unittest.TestCase): self.assertTypedEquals(Root(4) ** F(2, 1), Root(4, F(1))) self.assertTypedEquals(Root(4) ** F(-2, 1), Root(4, -F(1))) self.assertTypedEquals(Root(4) ** F(-2, 3), Root(4, -3.0)) - self.assertEqual(F(3, 2) ** SymbolicReal('X'), SymbolicReal('1.5 ** X')) + self.assertEqual(F(3, 2) ** SymbolicReal('X'), SymbolicReal('3/2 ** X')) self.assertEqual(SymbolicReal('X') ** F(3, 2), SymbolicReal('X ** 1.5')) - self.assertTypedEquals(F(3, 2) ** Rect(2, 0), Polar(2.25, 0.0)) - self.assertTypedEquals(F(1, 1) ** Rect(2, 3), Polar(1.0, 0.0)) + self.assertTypedEquals(F(3, 2) ** Rect(2, 0), Polar(F(9,4), 0.0)) + self.assertTypedEquals(F(1, 1) ** Rect(2, 3), Polar(F(1), 0.0)) self.assertTypedEquals(F(3, 2) ** RectComplex(2, 0), Polar(2.25, 0.0)) self.assertTypedEquals(F(1, 1) ** RectComplex(2, 3), Polar(1.0, 0.0)) self.assertTypedEquals(Polar(4, 2) ** F(3, 2), Polar(8.0, 3.0)) self.assertTypedEquals(Polar(4, 2) ** F(3, 1), Polar(64, 6)) self.assertTypedEquals(Polar(4, 2) ** F(-3, 1), Polar(0.015625, -6)) self.assertTypedEquals(Polar(4, 2) ** F(-3, 2), Polar(0.125, -3.0)) - self.assertEqual(F(3, 2) ** SymbolicComplex('X'), SymbolicComplex('1.5 ** X')) + self.assertEqual(F(3, 2) ** SymbolicComplex('X'), SymbolicComplex('3/2 ** X')) self.assertEqual(SymbolicComplex('X') ** F(3, 2), SymbolicComplex('X ** 1.5')) - self.assertEqual(F(3, 2) ** Symbolic('X'), Symbolic('1.5 ** X')) + self.assertEqual(F(3, 2) ** Symbolic('X'), Symbolic('3/2 ** X')) self.assertEqual(Symbolic('X') ** F(3, 2), Symbolic('X ** 1.5')) def testMixingWithDecimal(self): @@ -751,6 +751,7 @@ Kasun Herath Chris Herborth Ivan Herman Jürgen Hermann +Joshua Jay Herman Gary Herron Ernie Hershey Thomas Herve diff --git a/Misc/NEWS.d/next/Library/2024-05-20-13-48-37.gh-issue-119189.dhJVs5.rst b/Misc/NEWS.d/next/Library/2024-05-20-13-48-37.gh-issue-119189.dhJVs5.rst new file mode 100644 index 0000000..e5cfbcf --- /dev/null +++ b/Misc/NEWS.d/next/Library/2024-05-20-13-48-37.gh-issue-119189.dhJVs5.rst @@ -0,0 +1,3 @@ +When using the ``**`` operator or :func:`pow` with :class:`~fractions.Fraction` +as the base and an exponent that is not rational, a float, or a complex, the +fraction is no longer converted to a float. |