What do you understand about pandas groupby?

A pandas groupby is a feature supported by pandas that are used to split and group an object. Like the sql/mysql/oracle groupby it is used to group data by classes, and entities which can be further used for aggregation. A dataframe can be grouped by one or more columns.

df = pd.DataFrame({'Vehicle':['Etios','Lamborghini','Apache200','Pulsar200'], 'Type':["car","car","motorcycle","motorcycle"]})
df

To perform groupby type the following code:

df.groupby('Type').count()