Q about object identity

[Ethan Furman]

vronskij at gmail.com wrote:
> Hello,
> 
> I am testing object identity.
> 
> If I do it from the interpreter, I get strange results.
> 
> 
>>>>*print [] is []*
> 
> *False*
> 
> 
>>>>print id([]), id([])
> 
> 3083942700 3083942700
> 
> 
> 
> Why is that? Isn't this an error?
> 
> 
> If I test it in a script, all is OK.
> 
> #!/usr/bin/python
> 
> a = []
> b = []
> 
> print a == b
> *print a is b*
> 
> print id(a), id(b)
> 
> print id(None), id(None)
> print id(True), id(True)
> 
> 
> On my computer, I got these results:
> 
> True
> *False*
> 3083769036 3083793516
> 135553336 135553336
> 135526444 135526444
> 
> All as expected.
> 
> 
> jan bodnar

Assuming I'm not missing something obvious here, the results from the 
script are the same as those from the interpreter -- the _is_ returns 
False in both cases.