Question from beginners: how to combine 2 columns

[woooee]

There is no reason to use Pandas on a simple task like this. You can just read the csv file normally.

with open('chicago.csv', 'r') as fp:
    for rec in fp:
        split_rec=rec.strip().split(",")
        ## you now have a list of columns and can use a 
        ## dictionary to count the 2 combined columns
        print(split_rec)

        ## ****** I am not going to do your homework for you *****