how should a csv file look like for python code example

Example 1: read csv python

import pandas as pd 
data = pd.read_csv("filename.csv") 
data.head()

Example 2: accessing element from csv file in python

import itertools
# ...
with open(filename, 'rb') as f:
     row = next(itertools.islice(csv.reader(f), row_number, row_number+1))
     print row[column_number]