Python sets.

[Dave Reed]

On Tuesday 04 May 2004 21:04, Shalabh Chaturvedi wrote:
> Grzegorz Dostatni wrote:
> > I've got a problem.
> > 
> > Some time ago (I'm a bit fuzzy about the date) I read about sets in
> > python. I even tried the code. I remember it was something fairly 
simple -
> > just a base data type (like list or dictionary).  I vaguely remember 
it
> > had a syntax similar to creating dictionaries.
> > 
> > Problem is I can't find it anymore.  I've searched around, but it 
doesn't
> > seem to exist. I know of "import sets" and creating classes like 
that, but
> > I'm sure it was a base data type. No import necessary.  There were
> > operators for basic set operations like set difference, division, 
etc.
> 
> You might have read "What's New in Python 2.4" which, as of now, 
really 
> explains what is *going* to be new in Python 2.4.
> 
> --
> Shalabh

There's also a Set type in Python 2.3 although it may be changing in
2.4.

> python
Python 2.3 (#1, Jul 30 2003, 11:37:39) 
[GCC 3.2.3] on sunos5
Type "help", "copyright", "credits" or "license" for more information.
>>> import sets
>>> dir(sets)
['BaseSet', 'ImmutableSet', 'Set', '_TemporarilyImmutableSet', 
'__all__', '__builtins__', '__doc__', '__file__', '__name__', 
'ifilter', 'ifilterfalse']
>>> s = sets.Set([1, 2, 3])
>>> s
Set([1, 2, 3])
>>>