Fractions.from_float() no longer loses precision with large integer inputs.
diff --git a/Lib/fractions.py b/Lib/fractions.py
index 4adb184..446ad8e 100755
--- a/Lib/fractions.py
+++ b/Lib/fractions.py
@@ -111,7 +111,7 @@
"""
if isinstance(f, numbers.Integral):
- f = float(f)
+ return cls(f)
elif not isinstance(f, float):
raise TypeError("%s.from_float() only takes floats, not %r (%s)" %
(cls.__name__, f, type(f).__name__))
diff --git a/Lib/test/test_fractions.py b/Lib/test/test_fractions.py
index 979fef7..a6c3c32 100644
--- a/Lib/test/test_fractions.py
+++ b/Lib/test/test_fractions.py
@@ -139,6 +139,8 @@
def testFromFloat(self):
self.assertRaises(TypeError, F.from_float, 3+4j)
self.assertEquals((10, 1), _components(F.from_float(10)))
+ bigint = 1234567890123456789
+ self.assertEquals((bigint, 1), _components(F.from_float(bigint)))
self.assertEquals((0, 1), _components(F.from_float(-0.0)))
self.assertEquals((10, 1), _components(F.from_float(10.0)))
self.assertEquals((-5, 2), _components(F.from_float(-2.5)))