oh dear

04/1.py

@@ -0,0 +1,6 @@
+sections = open("input", "r").read().split("\n\n")
+sections = [section.replace("\n", " ") for section in sections]
+passports = [dict([s.split(":") for s in section.split(" ") if s]) for section in sections]
+required = {"byr", "iyr", "eyr", "hgt", "hcl", "ecl", "pid"}
+valid = [p for p in passports if len(required.difference(p.keys())) == 0]
+print(len(valid))

04/2.py

@@ -0,0 +1,15 @@
+sections = open("input", "r").read().split("\n\n")
+sections = [section.replace("\n", " ") for section in sections]
+passports = [dict([s.split(":") for s in section.split(" ") if s]) for section in sections]
+import re
+validators = {
+        "byr": ("[0-9]{4}$", lambda a: 1920 <= int(a) <= 2002),
+        "iyr": ("[0-9]{4}$", lambda a: 2010 <= int(a) <= 2020),
+        "eyr": ("[0-9]{4}$", lambda a: 2020 <= int(a) <= 2030),
+        "hgt": ("[0-9]+(in|cm)$", lambda a: 150 <= int(a.replace("cm", "")) <= 193 if "cm" in a else 59 <= int(a.replace("in", "")) <= 76),
+        "hcl": ("#[0-9a-f]{6}$", lambda a: True),
+        "ecl": ("(amb|blu|brn|gry|grn|hzl|oth)$", lambda a: True),
+        "pid": ("[0-9]{9}$", lambda a: True),
+}
+valid = [p for p in passports if all([k in p and re.match(r, p[k]) and v(p[k]) for (k, (r, v)) in validators.items()])]
+print(len(valid))

04/test

@@ -0,0 +1,13 @@
+ecl:gry pid:860033327 eyr:2020 hcl:#fffffd
+byr:1937 iyr:2017 cid:147 hgt:183cm
+
+iyr:2013 ecl:amb cid:350 eyr:2023 pid:028048884
+hcl:#cfa07d byr:1929
+
+hcl:#ae17e1 iyr:2013
+eyr:2024
+ecl:brn pid:760753108 byr:1931
+hgt:179cm
+
+hcl:#cfa07d eyr:2025 pid:166559648
+iyr:2011 ecl:brn hgt:59in