What is unique about Python?

[Roy Smith]

In article <1h80qj8.1xwosof1xqlkl8N%aleax at mail.comcast.net>,
 aleax at mail.comcast.net (Alex Martelli) wrote:

> gsteff <greg.steffensen at gmail.com> wrote:
>    ...
> > that's not really what I'm looking for.  So I'm wondering, what is
> > innovative about Python, 
> 
> The letter 'y'.  Before Python, it was woefully underused in the names
> of programming languages.  Now, of course, there's also Ruby, but then
> we know Ruby did get some ideas from Python (and the letter 'y' is one
> of them).
> 
> 
> Alex

Yacc has been around for a long time.