Importing Pandas

Before we can start working with Pandas, we need to import it:

import pandas as pd

Defining a Series

We can define a Series in Pandas using the following syntax:

pd.Series(elements_list, index_list)

The following code defines a new Series called populations representing the populations of various cities (in milions):


              12345678
            
import pandas as pd

populations = pd.Series(
    [8.9, 3.6, 2.7, 1.6],
    ["London", "Berlin", "Rome", "Budapest"]
)

print(populations)

In some cases you might see the following syntax of creating a Series, which has the same effect, except in this case we use a named parameter to specify the index_list for the sake of readibility:

populations = pd.Series(
    [8.9, 3.6, 2.7, 1.6],
    index=["London", "Berlin", "Rome", "Budapest"]
)

The `index` Property

We can access the list of indices of a Series using the index property:


              12345678
            
import pandas as pd

populations = pd.Series(
    [8.9, 3.6, 2.7, 1.6],
    ["London", "Berlin", "Rome", "Budapest"]
)

print(populations.index)