Day 4

day4a.py

+import re
+
+def valid(ppt):
+    k = ppt.keys()
+    for v in ["byr", "iyr", "eyr", "hgt", "hcl", "ecl", "pid"]:
+        if v not in k:
+            print(f"Missing {v}.")
+            return False
+    # byr = ppt["byr"]
+    # byrm = re.match(r"^(\d{4})$", byr)
+    # if byrm == None:
+    #     print(f"Bad BYR: {byr}.")
+    #     return False
+    # byrn = int(byrm[1])
+    # if byrn < 1920 or byrn > 2002:
+    #     print(f"Bad BYR: {byr}.")
+    #     return False
+    # iyr = ppt["iyr"]
+    # iyrm = re.match(r"^(\d{4})$", iyr)
+    # if iyrm == None:
+    #     print(f"Bad IYR: {iyr}.")
+    #     return False
+    # iyrn = int(iyrm[1])
+    # if iyrn < 2010 or iyrn > 2020:
+    #     print(f"Bad IYR: {iyr}.")
+    #     return False
+    # eyr = ppt["eyr"]
+    # eyrm = re.match(r"^(\d{4})$", eyr)
+    # if eyrm == None:
+    #     print(f"Bad EYR: {eyr}.")
+    #     return False
+    # eyrn = int(eyrm[1])
+    # if eyrn < 2020 or eyrn > 2030:
+    #     print(f"Bad EYR: {eyr}.")
+    #     return False
+    # hgt = ppt["hgt"]
+    # hgtm = re.match(r"^(\d{2,3})(cm|in)$", hgt)
+    # if hgtm == None:
+    #     print(f"Bad HGT: {hgt}.")
+    #     return False
+    # hgtn = int(hgtm[1])
+    # hgtu = hgtm[2]
+    # if (hgtu == "cm" and (hgtn < 150 or hgtn > 193)) or (hgtu == "in" and (hgtn < 59 or hgtn > 76)):
+    #     print(f"Bad HGT: {hgt}.")
+    #     return False
+    # hcl = ppt["hcl"]
+    # if re.search(r"^#[0-9a-f]{6}$", hcl) == None:
+    #     print(f"Bad HCL: {hcl}.")
+    #     return False
+    # ecl = ppt["ecl"]
+    # if ecl not in ["amb", "blu", "brn", "gry", "grn", "hzl", "oth"]:
+    #     print(f"Bad ECL: {ecl}.")
+    #     return False
+    # pid = ppt["pid"]
+    # if re.search(r"^[0-9]{9}$", pid) == None:
+    #     print(f"Bad PID: {pid}.")
+    #     return False
+
+    return True
+
+def main():
+    with open("input4.txt") as file:
+        text = file.read()
+    ppts = text.split("\n\n")
+    print(f"I have {len(ppts)} passports.")
+    count = 0
+    cinv = 0
+    for ppt in ppts:
+        ppt = ppt.replace("\n", " ")
+        pptchunks = ppt.split(" ")
+        pptdct = {}
+        for chunk in pptchunks:
+            try:
+                bits = chunk.split(":")
+                pptdct[bits[0]] = bits[1]
+            except:
+                print(ppt)
+        # print(ppt)
+        # print(pptdct)
+        if valid(pptdct):
+            count += 1
+        else:
+            cinv += 1
+    print(f"There are {count} valid passports and {cinv} invalid ones.")
+
+if __name__ == "__main__":
+    main()

day4b.py

+import re
+
+def valid(ppt):
+    k = ppt.keys()
+    for v in ["byr", "iyr", "eyr", "hgt", "hcl", "ecl", "pid"]:
+        if v not in k:
+            print(f"Missing {v}.")
+            return False
+    byr = ppt["byr"]
+    byrm = re.match(r"^(\d{4})$", byr)
+    if byrm == None:
+        print(f"Bad BYR: {byr}.")
+        return False
+    byrn = int(byrm[1])
+    if byrn < 1920 or byrn > 2002:
+        print(f"Bad BYR: {byr}.")
+        return False
+    iyr = ppt["iyr"]
+    iyrm = re.match(r"^(\d{4})$", iyr)
+    if iyrm == None:
+        print(f"Bad IYR: {iyr}.")
+        return False
+    iyrn = int(iyrm[1])
+    if iyrn < 2010 or iyrn > 2020:
+        print(f"Bad IYR: {iyr}.")
+        return False
+    eyr = ppt["eyr"]
+    eyrm = re.match(r"^(\d{4})$", eyr)
+    if eyrm == None:
+        print(f"Bad EYR: {eyr}.")
+        return False
+    eyrn = int(eyrm[1])
+    if eyrn < 2020 or eyrn > 2030:
+        print(f"Bad EYR: {eyr}.")
+        return False
+    hgt = ppt["hgt"]
+    hgtm = re.match(r"^(\d{2,3})(cm|in)$", hgt)
+    if hgtm == None:
+        print(f"Bad HGT: {hgt}.")
+        return False
+    hgtn = int(hgtm[1])
+    hgtu = hgtm[2]
+    if (hgtu == "cm" and (hgtn < 150 or hgtn > 193)) or (hgtu == "in" and (hgtn < 59 or hgtn > 76)):
+        print(f"Bad HGT: {hgt}.")
+        return False
+    hcl = ppt["hcl"]
+    if re.search(r"^#[0-9a-f]{6}$", hcl) == None:
+        print(f"Bad HCL: {hcl}.")
+        return False
+    ecl = ppt["ecl"]
+    if ecl not in ["amb", "blu", "brn", "gry", "grn", "hzl", "oth"]:
+        print(f"Bad ECL: {ecl}.")
+        return False
+    pid = ppt["pid"]
+    if re.search(r"^[0-9]{9}$", pid) == None:
+        print(f"Bad PID: {pid}.")
+        return False
+
+    return True
+
+def main():
+    with open("input4.txt") as file:
+        text = file.read()
+    ppts = text.split("\n\n")
+    print(f"I have {len(ppts)} passports.")
+    count = 0
+    cinv = 0
+    for ppt in ppts:
+        ppt = ppt.replace("\n", " ")
+        pptchunks = ppt.split(" ")
+        pptdct = {}
+        for chunk in pptchunks:
+            try:
+                bits = chunk.split(":")
+                pptdct[bits[0]] = bits[1]
+            except:
+                print(ppt)
+        # print(ppt)
+        # print(pptdct)
+        if valid(pptdct):
+            count += 1
+        else:
+            cinv += 1
+    print(f"There are {count} valid passports and {cinv} invalid ones.")
+
+if __name__ == "__main__":
+    main()