Reading and processing clockify csv file

read_csv.py

import csv
from collections import defaultdict 

def duration_to_seconds(duration):
    elements = duration.split(':')
    hour = int(elements[0])
    min = int(elements[1])
    sec = int(elements[2])
    return hour*60*60 + min*60 + sec 


mydict = defaultdict(int)
with open('clockify.csv', 'r') as file:
    reader = csv.reader(file)
    line = 0
    for row in reader:
        line += 1 
        # we are skipping the first line as it just contains title of the colums 
        if  line > 1 : 
            date = row[8]
            duration = row[12]
            mydict[date] += duration_to_seconds(duration)