diff options
Diffstat (limited to 'Lib/numbers.py')
| -rw-r--r-- | Lib/numbers.py | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/Lib/numbers.py b/Lib/numbers.py index 6c3c3e1..4dd5ca7 100644 --- a/Lib/numbers.py +++ b/Lib/numbers.py @@ -291,7 +291,13 @@ class Rational(Real, Exact): # Concrete implementation of Real's conversion to float. def __float__(self): - """float(self) = self.numerator / self.denominator""" + """float(self) = self.numerator / self.denominator + + It's important that this conversion use the integer's "true" + division rather than casting one side to float before dividing + so that ratios of huge integers convert without overflowing. + + """ return self.numerator / self.denominator |