dictionary extraction

def readFile(fileName):
    infile = open(fileName, 'r')
    firstLine = infile.readline()
    rows = infile.readlines()
    infile.close()

    info = {}
    for row in rows:
        cols = row.split(',')
        info[cols[0]], int(cols[2])

    return(info)

data = readFile('data.txt')