[Pythonmac-SIG] Fast way to get a list of unique values?

[Bob Ippolito]

The only ways I know of doing this in python are to use a for loop.. 
either creating a dictionary with keys set to those values, or sorting 
the list and making the new list from the first time you see a 
particular element.  Unless I'm mistaken, trying to hack it out any 
other way (without breaking out a C compiler) would be much slower.

-bob

On Monday, Sep 9, 2002, at 16:48 US/Eastern, Robb Brown wrote:
>
> I have a large array (Numeric) of integers.  I'd like to get a list of 
> all the unique values in that array.  Naturally I'd like to avoid a 
> for loop.  Is there an easy way to do this in Python?
>
> Thanks,
>
> Robb