General Import the necessary packages - pandas, numpy, seaborn, matplotlib.pyplot

import.py

#Import essential packages
# Pandas a python library used for data manupilation and analysis
import pandas as pd
# Numpy a python library used for mathematical operations on arrays
import numpy as np
# Matplotlib is a library used for plts and visualizations
import matplotlib.pyplot as plt
#Seaborn Library is based on matplotlib and used for visualizations
import seaborn as sns
# adding nice backgrounds to graphs
sns.set(color_codes=True)

#Asking python to ignore warnings
import warnings
warnings.filterwarnings("ignore")

# asking python to display the graphs
%matplotlib inline

pd.set_option('display.float_format', lambda x: '%.5f' % x) # supressing numerical display in scientific notations

Its mostly used for doing EDA for any dataset.
The above imports helps to get better looking charts and avoids warnings.