Solution to problem 11 in Python [mypy]

src/Year_2016/P11.py

@@ -167,12 +167,10 @@
 
 import re
 from collections import defaultdict, deque, namedtuple
-
-# part2 = [1, 1, 2, 3, 2, 3, 2, 3, 2, 3, 1, 1, 1, 1]
+from typing import Deque
 
 
 def parse_entry():
-    # floor_re = re.compile(r"The (\w+) floor contains")
     gen_re = re.compile(r"a (\w+) generator")
     chip_re = re.compile(r"a (\w+-compatible) microchip")
     with open("files/P11.txt", "r") as f:
@@ -184,18 +182,24 @@ def parse_entry():
             microchips = chip_re.findall(my_input)
             if microchips:
                 [entry[idx].append((idx, m)) for m in microchips]
-
     return entry
 
 
-def find_level_of_microchip(item, dic):
-    for key in dic.keys():
-        for val in dic[key]:
-            if f"{item}-compatible" in val:
-                return val[0]
+def find_level_of_microchip(
+    item: str, dic: defaultdict[int, list[tuple[int, str]]]
+):
+    try:
+        for key in dic.keys():
+            for val in dic[key]:
+                if f"{item}-compatible" in val:
+                    return val[0]
+    except ValueError:
+        return None
 
 
-def get_floor_config(dic):
+def get_floor_config(
+    dic: defaultdict[int, list[tuple[int, str]]]
+) -> list[int]:
     floor_config = []
     for lvl in dic.keys():
         for items in dic[lvl]:
@@ -211,7 +215,7 @@ def get_floor_config(dic):
 State = namedtuple("State", ["f", "e", "s"])
 
 
-def valid(state):
+def valid(state) -> bool:
     if not 1 <= state.e <= 4:
         return False
 
@@ -222,11 +226,11 @@ def valid(state):
     return True
 
 
-def solved(state):
+def solved(state) -> bool:
     return all(i == 4 for i in state.f)
 
 
-def generalize(state):
+def generalize(state) -> str:
     generators = [
         sum(1 for v in state.f[::2] if v == floor) for floor in range(1, 5)
     ]
@@ -237,8 +241,8 @@ def generalize(state):
     return "".join(map(str, generators + microchips)) + str(state.e)
 
 
-def bfs(floor_config):
-    bfs_q = deque()
+def bfs(floor_config: list[int]):
+    bfs_q: Deque = deque()
     bfs_q.append(State(floor_config, 1, 0))
     seen = set()
     while bfs_q:
@@ -273,7 +277,7 @@ def bfs(floor_config):
                 state.f[idx] -= 1
 
 
-def part_1():
+def part_1() -> None:
     p1 = get_floor_config(parse_entry())
     print(f"We need {bfs(p1)} steps for part 1")
 
@@ -298,7 +302,7 @@ def part_1():
 # # including these four new ones, to the fourth floor?
 
 
-def part_2():
+def part_2() -> None:
     p2 = get_floor_config(parse_entry())
     # extra parts are on floor 1
     p2.extend([1, 1, 1, 1])