CODE EXAMPLE FOR PYTHON

how to access pandas column

 #columns in Pandas documentation 
#import numpy as np
import pandas as pd
a = pd.DataFrame()
b = pd.DataFrame([[1,2,3,4],[5,6,7,8],[2,7,3,23],[3,6,8,23],[23,23,63,12]],columns=['A', 'B', 'C', 'D'])
print(b)