Issue 3285: Fractions from_float() and from_decimal() accept Integral arguments.

1 files changed, 6 insertions, 2 deletions

diff --git a/Lib/fractions.py b/Lib/fractions.py
index 6bde774..4adb184 100755
--- a/Lib/fractions.py
+++ b/Lib/fractions.py
@@ -110,7 +110,9 @@ class Fraction(Rational):
         Beware that Fraction.from_float(0.3) != Fraction(3, 10).
 
         """
-        if not isinstance(f, float):
+        if isinstance(f, numbers.Integral):
+            f = float(f)
+        elif not isinstance(f, float):
             raise TypeError("%s.from_float() only takes floats, not %r (%s)" %
                             (cls.__name__, f, type(f).__name__))
         if math.isnan(f) or math.isinf(f):
@@ -121,7 +123,9 @@ class Fraction(Rational):
     def from_decimal(cls, dec):
         """Converts a finite Decimal instance to a rational number, exactly."""
         from decimal import Decimal
-        if not isinstance(dec, Decimal):
+        if isinstance(dec, numbers.Integral):
+            dec = Decimal(int(dec))
+        elif not isinstance(dec, Decimal):
             raise TypeError(
                 "%s.from_decimal() only takes Decimals, not %r (%s)" %
                 (cls.__name__, dec, type(dec).__name__))