fixed partitions to not copy the sequence.

Nurdok · Nurdok · commit f03c031b8a02 · 2012-11-02T17:12:18.000+02:00
diff --git a/python_toolbox/sequence_tools.py b/python_toolbox/sequence_tools.py
@@ -135,12 +135,13 @@ def partitions(sequence, partition_size=None, n_partitions=None,
 
     enlarged_length = partition_size * n_partitions
 
+    filler = []
     if fillvalue != NoFillValue:
         filler = itertools.repeat(fillvalue, enlarged_length - sequence_length)
-        sequence = list(itertools.chain(sequence, filler))
 
     blocks = [sequence[i : i + partition_size] for i in
               xrange(0, enlarged_length, partition_size)]
+    blocks[-1].extend(filler)
 
     return blocks
 
