Python Pandas Methods for Data Analysis

import pandas as pd
import numpy as np

df # Our Main DataFrame

df_country_group = df.groupby('Country')
df_country_group.mean()

df_country_group.get_group('Germany')
# Faster as df[df['Country'] == 'Germany']
# Test it in Jupyter Notebooks with %%timeit

df.nlargest(N, column_name, keep = 'first')
df.nlargest(3,'Number of Laptops')
# Same principle to nsmallest()