Function get_number_of_lines

scripts/add_youtube_durations.py:20–23

(file_name)

        exit(1)

def get_number_of_lines(file_name):
    with open(file_name, 'r') as f:
        # no really, this is somehow faster than sum()
        return len([l for l in f])

def get_duration(json_video):
    hours = 0