Questions about app design - OOP with python classes

[Paul Rubin]

Steven D'Aprano <steve at REMOVEME.cybersource.com.au> writes:
> But if you used Apps Hungarian, and saw this line of code:
> 
> if hmmCurrentHeight <= hinCriticalHeight:
> 
> then you should instantly recognise that there's a problem. Comparing
> a height in millimetres to a height in inches is not a good thing to do,
> no matter that they're both floats.

That still sounds like an unreliable manual type system, instead of an
automatic type system that includes dimension analysis.  You might
like this:

    http://futureboy.homeip.net/frinkdocs/

There are many Python implementations of dimensioned units as well.  I
posted one here a few weeks ago.