retyped day2, completed days 3 and 4, modified template

template/common.py

@@ -1,5 +1,3 @@
-from typing import Any
-
-
-def parse(filename: str) -> Any | None:
-    pass
+def parse(filename: str):
+    with open(filename) as f:
+        return [line[:-1] for line in f.readlines()]

template/part1.py

@@ -1,13 +1,12 @@
 from common import parse
 
 
-def solve():
+def solve(input):
     pass
 
 
 def main():
-    r = solve()
-    print(r)
+    print(solve(parse("input")))
 
 
 if __name__ == "__main__":

template/part2.py

@@ -1,14 +0,0 @@
-from common import parse
-
-
-def solve():
-    pass
-
-
-def main():
-    r = solve()
-    print(r)
-
-
-if __name__ == "__main__":
-    main()