pandas series: change order of index

Question

I have a Pandas series, for example like this

s = pandas.Series(data = [1,2,3], index = ['A', 'B', 'C'])

How can I change the order of the index, so that s becomes

B    2
A    1
C    3

I have tried

s['B','A','C']

but that will give me a key error. (In this particular example I could presumably take care of the order of the index while constructing the series, but I would like to have a way to do this after the series has been created.)

Answer 1

Use reindex:

In [52]:

s = s.reindex(index = ['B','A','C'])
s
Out[52]:
B    2
A    1
C    3
dtype: int64