Way for see if dict has a key

[Michele Petrazzo]

Fredrik Lundh wrote:
> Michele Petrazzo wrote:
> 
>>>> key in dict
>>> new syntax (2.3 and later).
>> So, following it, it can be used for the operations like len?
> 
> what's "it" in this sentence?
> 

It, is the thought that the new 2.3 introduce.

Michele