pandas rename index values

Question

I have the following dataframe in pandas (python):

      B.  X.  Y.  
A
alpha 3. 5.  5
beta  9. 9.  11

I want to change 'alpha' for another name, like 'mu'. What should I do?

Answer 1

Use rename with parameter index
pass a dictionary to the index parameter

df.rename(index={'alpha': 'mu'})