Get topmost N records within each group

Firstly, we created a pandas dataframe in Python:

Output:

   Variables  Value
0          A      2
1          A      5
2          A      0
3          A      3
4          B      1
5          B      0
6          B      9
7          C      0
8          C      7
9          C      5
10         C      4

Firstly, the pandas dataframe stores data in the form of a table. In some situations we need to retrieve data from dataframe according to some conditions. Such as if we want to get top N records of each group of the dataframe. We create the dataframe and use the methods mentioned below.