mambokn...@gmail.com wrote: > I cannot resolve this on my own. Need help, please... > > nestedTuples = [ > [ (L0t0e0, L0t0e1, L0t0e2), (L0t1e0, 2, L0t1e2), (L0t2e0, L0t2e1, L0t2e2) > [ ], (L1t0e0, L1t0e1, L1t0e2), (L1t1e0, 0, L1t1e2), (L1t2e0, L1t2e1, > [ L1t2e2) ], (L2t0e0, L2t0e1, L2t0e2), (L2t1e0, 1, L2t1e2), (L2t2e0, > [ L2t2e1, L2t2e2) ] ] > > With LNtXeY I mean the element Y in the tuple X of the list N. > > How can I sort nestedTuples by, say, the 2nd element in the 2nd tuple of > each list?
def getkey(item): return item[1][1] namedTuples.sort(key=getkey) You can also write this as namedTuples.sort(key=lambda item: item[1][1]) > The above should get sorted as : > > nestedTuples = [ > [ (L1t0e0, L1t0e1, L1t0e2), (L1t1e0, 0, L1t1e2), (L1t2e0, L1t2e1, L1t2e2) > [ ], (L2t0e0, L2t0e1, L2t0e2), (L2t1e0, 1, L2t1e2), (L2t2e0, L2t2e1, > [ L2t2e2) ], (L0t0e0, L0t0e1, L0t0e2), (L0t1e0, 2, L0t1e2), (L0t2e0, > [ L0t2e1, L0t2e2) ] ] -- http://mail.python.org/mailman/listinfo/python-list