Cyclic shift of a pandas series

Question

I am using the shift method for a data series in pandas (documentation).

Is it possible do a cyclic shift, i.e. the first value become the last value, in one step?

Answer 1

To do this without using a single step:

>>> output = input.shift()
>>> output.loc[output.index.min()] = input.loc[input.index.max()]
>>> output
Out[32]: 
5     0.981553
15    0.995232
25    0.999794
35    1.006853
45    0.997781
Name: vRatio, dtype: float64