On Feb 25, 7:44 pm, Jeff Schwab <[EMAIL PROTECTED]> wrote:
> [EMAIL PROTECTED] wrote:
> > On Feb 24, 9:28 pm, George Sakkis <[EMAIL PROTECTED]> wrote:
>
> >> [1]http://www.martinfowler.com/eaaCatalog/identityMap.html
>
> > [1] illustrates a case in which 'a is a' returns False, and in the
> > other
[EMAIL PROTECTED] wrote:
> On Feb 24, 9:28 pm, George Sakkis <[EMAIL PROTECTED]> wrote:
>>
>> [1]http://www.martinfowler.com/eaaCatalog/identityMap.html
>
> [1] illustrates a case in which 'a is a' returns False, and in the
> other corner of the DeMorgan table, there is 'a is b' returns True for
>
> But this doesn't tell you anything about Python except that it's
> flexible enough to construct counter-intuitive classes.
>
> Everything you have been told is true for the normal cases you will come
> across in everyday usage. If you want to play in the obscure corners of
> the language that's f
[EMAIL PROTECTED] wrote:
> On Feb 24, 9:28 pm, George Sakkis <[EMAIL PROTECTED]> wrote:
>> On Feb 24, 9:11 pm, [EMAIL PROTECTED] wrote:
>>
>>
>>
>>
>>
>>> On Feb 24, 7:58 pm, Jeff Schwab <[EMAIL PROTECTED]> wrote:
[EMAIL PROTECTED] wrote:
> Can someone explain this?
a= {}
Cre
On Feb 24, 9:28 pm, George Sakkis <[EMAIL PROTECTED]> wrote:
> On Feb 24, 9:11 pm, [EMAIL PROTECTED] wrote:
>
>
>
>
>
> > On Feb 24, 7:58 pm, Jeff Schwab <[EMAIL PROTECTED]> wrote:
>
> > > [EMAIL PROTECTED] wrote:
> > > > Can someone explain this?
>
> > > a= {}
>
> > > Create an empty dict and
On Feb 24, 9:11 pm, [EMAIL PROTECTED] wrote:
> On Feb 24, 7:58 pm, Jeff Schwab <[EMAIL PROTECTED]> wrote:
>
>
>
> > [EMAIL PROTECTED] wrote:
> > > Can someone explain this?
>
> > a= {}
>
> > Create an empty dict and bind it to the name a.
>
> > a[(3,)]= 0
>
> > Set the key/value pair (3,)
On Feb 24, 7:58 pm, Jeff Schwab <[EMAIL PROTECTED]> wrote:
> [EMAIL PROTECTED] wrote:
> > Can someone explain this?
>
> a= {}
>
> Create an empty dict and bind it to the name a.
>
> a[(3,)]= 0
>
> Set the key/value pair (3,):0 to the dict.
>
> (3,) in a
>
> Is (3,) one of the keys in
[EMAIL PROTECTED] wrote:
> Can someone explain this?
>
a= {}
Create an empty dict and bind it to the name a.
a[(3,)]= 0
Set the key/value pair (3,):0 to the dict.
(3,) in a
Is (3,) one of the keys in the dict?
> True
Yes, it is.
(3,) is (3,)
Create two separate tuples
Can someone explain this?
>>> a= {}
>>> a[(3,)]= 0
>>> (3,) in a
True
>>> (3,) is (3,)
False
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