DataFrame.drop loses MultiIndex

[scouredimage]

In [2]: df = DataFrame({'a': [1,2,3], 'b': [1,2,3], 'c': [4,5,6]})

In [3]: df.set_index(['a','b'], inplace=True)
Out[3]: 
     c
a b   
1 1  4
2 2  5
3 3  6

In [5]: dropped = df.drop((1,1))

In [6]: dropped
Out[6]: 
     c
2 2  5
3 3  6

MultiIndex is gone! (2,2) and (3,3) are now plain tuples

[wesm]

Thanks-- I'll take a look

[wesm]

The MultiIndex was still there but the names are not preserved. Fixed now