PEP Parade

[Roman Suzi]

On Fri, 8 Mar 2002, Skip Montanaro wrote:

>
>    Roman> Just one comment about
>
>    Roman>   PEP 270 - uniq method for list objects
>
>    Roman> maybe adding dict <-> list conversion functions will make this
>    Roman> automatically?
>
>Nothing new is necessary since 2.2 was released:
>
>    >>> mylist = [1,2,3,5,6,6,9,9,1,2,3,4]
>    >>> mydict = dict(zip(mylist,mylist))
>    >>> mydict
>    {1: 1, 2: 2, 3: 3, 4: 4, 5: 5, 6: 6, 9: 9}
>    >>> mydict.values()
>    [1, 2, 3, 4, 5, 6, 9]

Wow. Then I am a bit underinformed. What uniq is for then?
To cover lengthy:

def uniq(x):
  return dict(map(None, x, [None])).keys()

?

:-)

OK, uniq is convenient, I agree. But then other set operations
should follow.

d.update(d1)   # d = d + d1
???            # d = d * d1
???            # d = d - d1

(i know it's easy to make class for them, but
so is for uniq)


Sincerely yours, Roman Suzi
-- 
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