Day 18 (glamorized)

day18/part1.py

@@ -1,11 +1,6 @@
 #!/usr/bin/env python3
-import re
 
 lines = (x.strip().replace(" ", "") for x in open("input.txt"))
-RE_PLUS = re.compile(r"\+")
-RE_MUL = re.compile(r"\*")
-RE_NUM = re.compile(r"^\d")
-RE_PAR = re.compile(r"^\((.*?)\)$")
 
 def evaluate(line):
     stack = [0]
@@ -28,4 +23,5 @@ def evaluate(line):
     stack[-1] = stack[-1]*num if op[-1] == '*' else stack[-1]+num
     return stack[0]
 
+
 print(sum(evaluate(line) for line in lines))