On 13 May, 16:19, Tim Chase <python.l...@tim.thechases.com> wrote: > On 05/13/2010 09:36 AM, a wrote: > > > this must be easy but its taken me a couple of hours already > > > i have > > > a=[2,3,3,4,5,6] > > > i want to know the indices where a==3 (ie 1 and 2) > > indexes = [i for (i, v) in enumerate(a) where v==3] > > > then i want to reference these in a > > In a _what_? You can then do things like > > for i in indexes: > print a[i] > > (but you already know these are "3", so it's not very exciting...) > > -tkc
really its to get the indexes in 1 array where something equals something then reference these in another array. -- http://mail.python.org/mailman/listinfo/python-list
