[Python-checkins] r60482 - python/trunk/Lib/rational.py

Thu Jan 31 23:07:17 CET 2008

Author: raymond.hettinger
Date: Thu Jan 31 23:07:16 2008
New Revision: 60482
Modified:
 python/trunk/Lib/rational.py
Log:
Minor wordsmithing on docstring
Modified: python/trunk/Lib/rational.py
==============================================================================

--- python/trunk/Lib/rational.py	(original)
+++ python/trunk/Lib/rational.py	Thu Jan 31 23:07:16 2008
@@ -193,20 +193,20 @@
 Rational, that means that we define __add__ and __radd__ as:
 
 def __add__(self, other):
+ # Both types have numerators/denominator attributes,
+ # so do the operation directly
 if isinstance(other, (int, long, Rational)):
- # Do the real operation.
 return Rational(self.numerator * other.denominator +
 other.numerator * self.denominator,
 self.denominator * other.denominator)
- # float and complex don't follow this protocol, and
- # Rational knows about them, so special case them.
+ # float and complex don't have those operations, but we
+ # know about those types, so special case them.
 elif isinstance(other, float):
 return float(self) + other
 elif isinstance(other, complex):
 return complex(self) + other
- else:
- # Let the other type take over.
- return NotImplemented
+ # Let the other type take over.
+ return NotImplemented
 
 def __radd__(self, other):
 # radd handles more types than add because there's
@@ -219,8 +219,7 @@
 return float(other) + float(self)
 elif isinstance(other, Complex):
 return complex(other) + complex(self)
- else:
- return NotImplemented
+ return NotImplemented
 
 
 There are 5 different cases for a mixed-type addition on
