How to Get the Index Labels of a Pandas Series?

Using series ‘index’ attribute, we can get the index labels of the series.

 

Example 1: If you do not specify the index explicitly, then a numeric index is used by default.

even_numbers = [2, 4, 6, 8]
even_numbers_series = pd.Series(even_numbers)

‘even_numbers_series.index’ return RangeIndex(start=0, stop=4, step=1)

 

Example 2: Explicitly specifying the index.

primes = [2, 3, 5]
primes_index = ['first_prime', 'second_prime', 'third_prime']
primes_series = pd.Series(primes, index=primes_index)

'primes_series.index' return Index(['first_prime', 'second_prime', 'third_prime'], dtype='object')

 

Find the below working application.

 

get_series_index.py

import pandas as pd

primes = [2, 3, 5]
primes_index = ['first_prime', 'second_prime', 'third_prime']
primes_series = pd.Series(primes, index=primes_index)

print('primes_series')
print(primes_series, '\n')
print('index_labels of primes_series is ', primes_series.index)

even_numbers = [2, 4, 6, 8]
even_numbers_series = pd.Series(even_numbers)
print('\neven_numbers_series')
print(even_numbers_series, '\n')
print('index_labels of even_numbers_series is ', even_numbers_series.index)

Output

primes_series
first_prime     2
second_prime    3
third_prime     5
dtype: int64 

index_labels of primes_series is  Index(['first_prime', 'second_prime', 'third_prime'], dtype='object')

even_numbers_series
0    2
1    4
2    6
3    8
dtype: int64 

index_labels of even_numbers_series is  RangeIndex(start=0, stop=4, step=1)

 

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