day_04a.py

#!/usr/bin/env python3


def main():
    f = open("../input/day_04_input")
    key_fields = {"byr", "iyr", "eyr", "hgt", "hcl", "ecl", "pid"}
    n_valid = 0
    n_fields = 0
    n_lines = 0
    for line in f:
        line = line.strip().replace("\n", "").replace("\r", "")
        if len(line) == 0:
            if n_fields == len(key_fields):
                n_valid += 1
            n_fields = 0
            continue
        fields = line.split()
        for field in fields:
            split_field = field.split(":")
            if split_field[0].strip() in key_fields:
                n_fields += 1
    if n_fields == len(key_fields):
        n_valid += 1
    print(n_valid)
    return n_valid


if __name__ == "__main__":
    main()