long but this too works :) >>> p=[] >>> x=[['cat','NM123',12],['cat','NM234',12], ['dog', 'NM56',65]] >>> import copy >>> def fn(a,b): if len(a)==3 and a[0]==b[0] and a[-1]==b[-1] and a[1]!=b[1]: a.insert(-1,b[1]) p.append(a) else: p.append(b) return p
>>> reduce(fn, copy.deepcopy(x)) [['cat', 'NM123', 'NM234', 12], ['dog', 'NM56', 65]] >>> p [['cat', 'NM123', 'NM234', 12], ['dog', 'NM56', 65]] >>> >>> >>> x [['cat', 'NM123', 12], ['cat', 'NM234', 12], ['dog', 'NM56', 65]] >>> 'p is your y' Nitin K On Thu, Dec 5, 2013 at 1:55 PM, Vikram K <vikthirtyf...@gmail.com> wrote: > Any suggestions on what i have to do to go from x to y? > > >>> x = [['cat','NM123',12],['cat','NM234',12], ['dog', 'NM56',65]] > >>> x > [['cat', 'NM123', 12], ['cat', 'NM234', 12], ['dog', 'NM56', 65]] > >>> y = [] > >>> y = [['cat','NM123, NM234', 12], ['dog', 'NM56', 65]] > >>> > > Regards > Vik > _______________________________________________ > BangPypers mailing list > BangPypers@python.org > https://mail.python.org/mailman/listinfo/bangpypers > _______________________________________________ BangPypers mailing list BangPypers@python.org https://mail.python.org/mailman/listinfo/bangpypers
