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https://github.com/Crocmagnon/advent-of-code.git
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108 lines
2.9 KiB
Python
108 lines
2.9 KiB
Python
import re
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from typing import List
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def main(filename: str, expected_part_1: int = None, expected_part_2: int = None):
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print(f"\n+ Running on {filename}")
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with open(filename) as f:
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passports = f.read().strip().split("\n\n") # type: List[str]
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counter_part_1 = 0
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counter_part_2 = 0
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fields_validation = {
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"byr": validate_byr,
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"iyr": validate_iyr,
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"eyr": validate_eyr,
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"hgt": validate_hgt,
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"hcl": validate_hcl,
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"ecl": validate_ecl,
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"pid": validate_pid,
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}
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for passport_str in passports:
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passport_data = extract_passport_data(passport_str)
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if is_valid_for_part_1(passport_data, fields_validation):
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counter_part_1 += 1
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if is_valid_for_part_2(passport_data, fields_validation):
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counter_part_2 += 1
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print(f"1. Found {counter_part_1} valid passports")
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if expected_part_1:
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assert expected_part_1 == counter_part_1
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print(f"2. Found {counter_part_2} valid passports")
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if expected_part_2:
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assert expected_part_2 == counter_part_2
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def extract_passport_data(passport):
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return dict([tuple(field.split(":")) for field in passport.split()])
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def is_valid_for_part_1(passport_data, fields_validation):
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return (fields_validation.keys() - passport_data.keys()) == set()
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def is_valid_for_part_2(passport_data, fields_validation):
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try:
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for validator in fields_validation.values():
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validator(passport_data)
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except (KeyError, ValueError, TypeError, AssertionError):
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return False
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return True
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def validate_byr(passport_data):
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assert_int_between(passport_data["byr"], 1920, 2002)
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def validate_iyr(passport_data):
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assert_int_between(passport_data["iyr"], 2010, 2020)
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def validate_eyr(passport_data):
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assert_int_between(passport_data["eyr"], 2020, 2030)
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def assert_int_between(value, low, high):
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value = int(value)
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assert low <= value <= high
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def validate_hgt(passport_data):
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hgt = passport_data["hgt"]
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reg = re.compile(r"^(?P<value>\d+)(?P<unit>cm|in)$")
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assert (match := reg.match(hgt))
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groups = match.groupdict()
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value = int(groups["value"])
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unit = groups["unit"]
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if unit == "in":
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assert 59 <= value <= 76
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elif unit == "cm":
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assert 150 <= value <= 193
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else:
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raise AssertionError("No unit found")
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def validate_hcl(passport_data):
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hcl = passport_data["hcl"]
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reg = re.compile(r"^#[0-9a-f]{6}$")
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assert reg.match(hcl)
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def validate_ecl(passport_data):
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ecl = passport_data.get("ecl")
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assert ecl in "amb blu brn gry grn hzl oth".split()
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def validate_pid(passport_data):
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pid = passport_data["pid"]
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reg = re.compile(r"^\d{9}$")
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assert reg.match(pid)
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if __name__ == "__main__":
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main("inputs/day04-tests-1", 2)
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main("inputs/day04-tests-2", 4, 0)
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main("inputs/day04-tests-3", 4, 4)
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main("inputs/day04", 170, 103)
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