Why did no one invent Python before?

[j_mckitrick]

> That already happened: the language is called Eiffel.
> 
> Checking all pre- and postconditions and invariants on each call was
> terrible slow when i started my project with a PIV 400 MHz. It was
> mostly impossible to use on normal size data sets. Now i use a PIV
> 2800 and give away my product (http://www.ruby-ide.com :-) with all
> runtime checks enabled. This makes my programming style much much
> better.

So you wrote a ruby IDE in Eiffel?

Which language do you prefer, then?