Its output is as follows −

c  3

d  4

e  5

dtype: int64

Retrieve Data Using Label (Index):

A Series is like a fixed-size dict  in that you can get and set values by index label.

Example 1:

Retrieve a single element using index label value.

import pandas as pd

s = pd. Series ([ 1 , 2 , 3 , 4 , 5 ], index = [ 'a' , 'b' , 'c' , 'd' , 'e' ])

#retrieve a single element

print s[ 'a' ]

Its output is as follows −

1

Example 2:

Retrieve multiple elements using a list of index label values.

import pandas as pd

s = pd. Series ([ 1 , 2 , 3 , 4 , 5 ], index = [ 'a' , 'b' , 'c' , 'd' , 'e' ])

#retrieve multiple elements

print s[[ 'a' , 'c' , 'd' ]]

Its output is as follows −

a  1

c  3

d  4

dtype: int64

Example 3:

If a label is not contained, an exception is raised.

import pandas as pd

s = pd. Series ([ 1 , 2 , 3 , 4 , 5 ], index = [ 'a' , 'b' , 'c' , 'd' , 'e' ])

#retrieve multiple elements

print s[ 'f' ]

Its output is as follows −

…

KeyError: 'f'