Day 19 (cleanup)

day19/part1.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-import re
 
 lines = (x.strip() for x in open("input.txt"))
 rules = {}

day19/part2.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-import re
 
 lines = (x.strip() for x in open("input.txt"))
 rules = {}
@@ -15,7 +14,8 @@ def yield_rule(line, rule, depth):
 
 
 def check(line, idx, depth=0):
-    if depth <= 100:
+    if depth > 100:
+        return
     rs = rules[idx]
     if isinstance(rs, str):
         if line.startswith(rs):