Map dataframe index using dictionary

Question

Why doesn\'t df.index.map(dict) work like df[\'column_name\'].map(dict)?

Here\'s a little example of trying to use index.map:

Answer 1

Adding get at the end

df['Two']=df.index.map(map_dict.get)
df
Out[155]: 
   one    Two
A   10  every
B   20   good
C   30    boy
D   40   does
E   50   fine