How to reshape dataframe if they have same index?

Question

If I have a dataframe like

df= pd.DataFrame([\'a\',\'b\',\'c\',\'d\'],index=[0,0,1,1])

   0
0  a
0  b
1  c
1  d

How can I re

Answer 1

You can use pivot with cumcount :

a = df.groupby(level=0).cumcount()
df = pd.pivot(index=df.index, columns=a, values=df[0])