About generators

[Peter Hansen]

Andrea Griffini wrote:

> I'm new to python and I really like what I've seen so far
> with just one exception; the absence of a nice syntax
> for ranges of integers. I've read PEPs about allowing
> 
>    for i in 10:
>      print i
> 
> and I must say I don't like it very much, but I didn't
> find a discussion about what looks more natural
> 
>    for i in 0...9:
>      print i
> 
> or
> 
>    squares = [x*x for x in 1...100]
> 
> that is having "expr1 ... expr2" returning an iterator
> from expr1 to expr2 (second limit included).
> 
> Has this been considered ? If yes (as I suppose) where
> can I find and explanation about it ? 

Google Groups is always helpful for such questions:

http://groups.google.com/groups?q=integer+range+syntax&meta=group%3Dcomp.lang.python.*

This leads to various threads, such as the "Re: Thoughts on PEP284"
which had the same proposal as yours and what is, I believe, an
adequate reason for rejecting it.

-Peter