import pandas as pd
import numpy as np

"""
Explanation: Select, Add, Delete, Columns
End of explanation
"""


cookbook_df = pd.DataFrame({'AAA' : [4,5,6,7], 'BBB' : [10,20,30,40],'CCC' : [100,50,-30,-50]})
cookbook_df['BBB']

"""
Explanation: dictionary like operations
dictionary selection with string index
End of explanation
"""


