analyzer.py

import sys


if __name__ == '__main__':
    filename = sys.argv[1]
    print(filename)

    with open(filename, 'r') as f:
        count = 0
        prev = 0
        prev_date = 0
        for line in f:
            count += 1
            parsed = line.split()

            num = int(parsed[0])
            if num < prev:
                print("num less than previous")
                print(line)
            prev = num

            date = int(parsed[1])
            if date < prev_date:
                print("date out of order")
                print(line)
            prev_date = date
        print(count)