DataFrame

Learning Objectives

• What is DataFrame?

• Create a DataFrame

What is a DataFrame?

• Two dimensional table

• Made up of a collection of Series

• Structured with labeled axes (rows and columns)

A data frame looks like a table as shown in the image here:

Create a DataFrame

• You can create a DataFrame using a Python list or a NumPy array

• Exercise: Try creating a dataframe using a NumPy array

• Don’t like python default index starting from ‘0’? Well, you can give your own column and row indexes

You can create a dataframe using dictionary

A Column is a Series

• A DataFrame is a collection of series.

• A series is a column in a table or a dataframe.

• There are 3 series in the given dataframe - ‘Regd. No’, ‘Names’ and ‘Marks%’