pydata/pandas — pull request #3246 by jreback (2013-04-02 21:25:16+00:00)
Title: BUG: setitem with list elements in the indexer broken

```
In [4]: df = DataFrame(np.arange(9).reshape((3, 3)),
index=["A", "B", "C"], columns=["A", "B", "C"])

In [5]: df.iloc[[0,1],[1,2]] += 100

In [6]: df.iloc[[0,1],[1,2]]
Out[6]:
B C
A 101 102
B 104 105

In [7]: df
Out[7]:
A B C
A 0 101 102
B 3 104 105
C 6 7 8
```