Fix linting.

src/holt59/aoc/2021/day10.py

@@ -1,6 +1,4 @@
 import sys
-from collections import defaultdict
-from dataclasses import dataclass
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2021/day11.py

@@ -1,6 +1,4 @@
 import sys
-from collections import defaultdict
-from dataclasses import dataclass
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2021/day12.py

@@ -1,6 +1,4 @@
 import sys
-from collections import defaultdict
-from dataclasses import dataclass
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2021/day13.py

@@ -1,6 +1,4 @@
 import sys
-from collections import defaultdict
-from dataclasses import dataclass
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2021/day14.py

@@ -1,6 +1,4 @@
 import sys
-from collections import defaultdict
-from dataclasses import dataclass
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2021/day15.py

@@ -1,6 +1,4 @@
 import sys
-from collections import defaultdict
-from dataclasses import dataclass
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2021/day16.py

@@ -1,6 +1,4 @@
 import sys
-from collections import defaultdict
-from dataclasses import dataclass
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2021/day17.py

@@ -1,6 +1,4 @@
 import sys
-from collections import defaultdict
-from dataclasses import dataclass
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2021/day18.py

@@ -1,6 +1,4 @@
 import sys
-from collections import defaultdict
-from dataclasses import dataclass
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2021/day19.py

@@ -1,6 +1,4 @@
 import sys
-from collections import defaultdict
-from dataclasses import dataclass
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2021/day2.py

@@ -1,12 +1,13 @@
 import sys
 from math import prod
-from typing import Literal, cast
+from typing import Literal, TypeAlias, cast
 
 lines = sys.stdin.read().splitlines()
 
-commands = [
-    (cast(Literal["forward", "up", "down"], (p := line.split())[0]), int(p[1]))
-    for line in lines
+Command: TypeAlias = Literal["forward", "up", "down"]
+
+commands: list[tuple[Command, int]] = [
+    (cast(Command, (p := line.split())[0]), int(p[1])) for line in lines
 ]
 
 

src/holt59/aoc/2021/day20.py

@@ -1,6 +1,4 @@
 import sys
-from collections import defaultdict
-from dataclasses import dataclass
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2021/day21.py

@@ -1,6 +1,4 @@
 import sys
-from collections import defaultdict
-from dataclasses import dataclass
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2021/day22.py

@@ -1,6 +1,4 @@
 import sys
-from collections import defaultdict
-from dataclasses import dataclass
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2021/day23.py

@@ -1,6 +1,4 @@
 import sys
-from collections import defaultdict
-from dataclasses import dataclass
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2021/day24.py

@@ -1,6 +1,4 @@
 import sys
-from collections import defaultdict
-from dataclasses import dataclass
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2021/day25.py

@@ -1,6 +1,4 @@
 import sys
-from collections import defaultdict
-from dataclasses import dataclass
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2021/day7.py

@@ -1,21 +1,19 @@
 import sys
 
-import numpy as np
+positions = [int(c) for c in sys.stdin.read().strip().split(",")]
 
-positions = np.asarray([int(c) for c in sys.stdin.read().strip().split(",")])
-
-min_position, max_position = positions.min(), positions.max()
+min_position, max_position = min(positions), max(positions)
 
 # part 1
 answer_1 = min(
-    np.sum(np.abs(positions - position))
+    sum(abs(p - position) for p in positions)
     for position in range(min_position, max_position + 1)
 )
 print(f"answer 1 is {answer_1}")
 
 # part 2
 answer_2 = min(
-    np.sum(abs(positions - position) * (abs(positions - position) + 1) // 2)
+    sum(abs(p - position) * (abs(p - position) + 1) // 2 for p in positions)
     for position in range(min_position, max_position + 1)
 )
 print(f"answer 2 is {answer_2}")