what the fuck is this code... should use some regex tbh

4/a.py

@@ -0,0 +1,26 @@
+lines = open('input').read().splitlines()
+
+arr = []
+arr_ = []
+for line in lines:
+    _ = line.replace(':',' ').split(' ')
+    if _[0] == '':
+        arr.append(arr_)
+        print("A")
+        arr_ = []
+    else:
+        arr_ = arr_ + _
+arr.append(arr_)
+
+a = 0
+for line in arr:
+    print(line)
+    c = 0
+    for key in line:
+        if key in ['byr', 'iyr', 'eyr', 'hgt', 'hcl', 'ecl', 'pid']:
+            c += 1
+    if c >= 7:
+        a += 1
+    print(c)
+
+print(a)

4/b.py

@@ -0,0 +1,46 @@
+lines = open('input').read().splitlines()
+
+arr = []
+arr_ = []
+for line in lines:
+    _ = line.split(' ')
+    if _[0] == '':
+        arr.append(arr_)
+        arr_ = []
+    else:
+        arr_ = arr_ + _
+arr.append(arr_)
+
+def v(v, k, l, u):
+    if v[0] == k and l <= int(v[1]) <= u:
+        return 1
+    else:
+        return 0
+
+A = 0
+for line in arr:
+    c = 0
+    print(line)
+    for field in line:
+        a = field.split(':')
+        # if a[0] in ['byr', 'iyr', 'eyr', 'hgt', 'hcl', 'ecl', 'pid']:
+        #     c += 1
+        c += v(a, 'byr', 1920, 2002)
+        c += v(a, 'iyr', 2010, 2020)
+        c += v(a, 'eyr', 2020, 2030)
+        if a[0] == 'hgt':
+            if a[1][-2]+a[1][-1] == 'cm' and 150 <= int(a[1].replace('cm', '')) <= 193:
+                c += 1
+            elif a[1][-2]+a[1][-1] == 'in' and 59 <= int(a[1].replace('in', '')) <= 76:
+                c += 1
+        elif a[0] == 'hcl' and a[1][0] == "#" and len(a[1]) == 7:
+            c += 1
+        elif a[0] == 'ecl' and a[1] in ['amb', 'blu', 'brn', 'gry', 'grn', 'hzl', 'oth']:
+            c += 1
+        elif a[0] == 'pid' and len(a[1]) == 9:
+            c += 1
+    print(c)
+    if c == 7:
+        A += 1
+
+print(A)