Adding day07 part 1

puzzles/day07.py

@@ -7,10 +7,28 @@ Run with:
 
 import pathlib
 import sys
+from statistics import median
 from typing import List, Tuple
 
+
+class AlignCrabSubs:
+    positions: List[int]
+
+    def __init__(self, positions: List[int]) -> None:
+        self.positions = positions
+
+    def calc_least_fuel(self) -> int:
+        target = median(self.positions)
+        fuel = 0
+        for num in self.positions:
+            fuel += num - target if num > target else target - num
+
+        return int(fuel)
+
+
 def part1(inputs: List[int]) -> int:
-    return False
+    subs = AlignCrabSubs(inputs)
+    return subs.calc_least_fuel()
 
 
 def part2(inputs: List[int]) -> int:
@@ -19,7 +37,7 @@ def part2(inputs: List[int]) -> int:
 
 def parse(inputs: str) -> List[int]:
     """Parse the input string"""
-    return [int(line) for line in inputs.split()]
+    return [int(value) for value in inputs.split(",")]
 
 
 def solve(path: str) -> Tuple[int, int]:

puzzles/test_day07.py

@@ -16,7 +16,6 @@ def day07_data():
     return aoc.parse(pathlib.Path(input_path).read_text().strip())
 
 
-@pytest.mark.skip(reason="Not implemented")
 def test_example1(example_data):
     assert aoc.part1(example_data) == 37
 
@@ -26,9 +25,8 @@ def test_example2(example_data):
     assert aoc.part2(example_data) == ...
 
 
-@pytest.mark.skip(reason="Not implemented")
 def test_part1(day07_data):
-    assert aoc.part1(day07_data) == ...
+    assert aoc.part1(day07_data) == 343441
 
 
 @pytest.mark.skip(reason="Not implemented")