-It is a two dimensional data structure defined in pandas which consists of rows and columns.
Here data can be :
1. one or more dictionary.
2. one or more series
3. 2D numpy Ndarray
List in DataFrames-
Name: 0, dtype: object
-In this program, we create a two dimensional array by list with all default index value in both dimension.
-Then ans will give array at 0th index
-And ans will give 1st element that present at 0th index of 0th index.