code review

[Roy Smith]

In article <mailman.1734.1341295784.4697.python-list at python.org>,
 Dennis Lee Bieber <wlfraed at ix.netcom.com> wrote:

> On 03 Jul 2012 04:11:22 GMT, Steven D'Aprano
> <steve+comp.lang.python at pearwood.info> declaimed the following in
> gmane.comp.python.general:
> 
> 
> > One of my favourites is the league, which in the Middle Ages was actually 
> > defined as the distance that a man, or a horse, could walk in an hour.
> 
> 	From the "Explanatory Supplement to the Astronomical Almanac" [1992
> University Science Books], Table 15.15, the speed of light is
> 
> 	1.80261750E12 furlongs/fortnight

And sure enough, that's what units says:

$ units
500 units, 54 prefixes
You have: c
You want: furlongs/fortnight
   * 1.8026175e+12
   / 5.5474886e-13