1>>> idx = pd.MultiIndex.from_arrays([
2... ['warm', 'warm', 'cold', 'cold'],
3... ['dog', 'falcon', 'fish', 'spider']],
4... names=['blooded', 'animal'])
5>>> s = pd.Series([4, 2, 0, 8], name='legs', index=idx)
6>>> s
7blooded animal
8warm dog 4
9 falcon 2
10cold fish 0
11 spider 8
12Name: legs, dtype: int64
13
14>>> s.min()
150
16