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Jeffrey Yasskin d7b00334f3 Add rational.Rational as an implementation of numbers.Rational with infinite 
precision. This has been discussed at http://bugs.python.org/issue1682. It's
useful primarily for teaching, but it also demonstrates how to implement a
member of the numeric tower, including fallbacks for mixed-mode arithmetic.

I expect to write a couple more patches in this area:
 * Rational.from_decimal()
 * Rational.trim/approximate() (maybe with different names)
 * Maybe remove the parentheses from Rational.__str__()
 * Maybe rename one of the Rational classes
 * Maybe make Rational('3/2') work.
 		2008-01-15 07:46:24 +00:00
..
Complex.py * Fix error in definition of Im() which returned self instead of 0 2005-04-09 14:55:07 +00:00
Dates.py Normalized a few cases of whitespace in function declarations. 2006-06-06 12:46:55 +00:00
Dbm.py Replace backticks with repr() or "%r" 2004-02-12 17:35:32 +00:00
README
…
Range.py Add code for a range function that uses generators. 2004-06-27 23:17:35 +00:00
Rev.py SF patch #803449: modernize demo scripts 2003-09-10 21:12:59 +00:00
Vec.py SF patch #803449: modernize demo scripts 2003-09-10 21:12:59 +00:00
bitvec.py Replace backticks with repr() or "%r" 2004-02-12 17:35:32 +00:00

README 

Examples of classes that implement special operators (see reference manual):

Complex.py	Complex numbers
Dates.py	Date manipulation package by Tim Peters
Dbm.py		Wrapper around built-in dbm, supporting	arbitrary values
Range.py	Example of a generator: re-implement built-in range()
Rat.py		Rational numbers
Rev.py		Yield the reverse of a sequence
Vec.py		A simple vector class
bitvec.py	A bit-vector class by Jan-Hein B\"uhrman

(For straightforward examples of basic class features, such as use of
methods and inheritance, see the library code.)