AoC 2015: day2

Signed-off-by: Ettore Dreucci <ettore.dreucci@gmail.com>

2015-python/solutions/day_2.py

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+"""AOC 2015 Day 1"""
+
+import pathlib
+import time
+
+TEST_INPUT = """2x3x4
+1x1x10"""
+
+def read_input(input_path: str) -> str:
+    """take input file path and return a str with the file's content"""
+    with open(input_path, 'r') as input_file:
+        input_data = input_file.read().strip()
+        return input_data
+
+def extract(input_data: str) -> list:
+    """take input data and return the appropriate data structure"""
+    gifts = list()
+    for gift in input_data.split('\n'):
+        dims = tuple(int(dim) for dim in gift.split('x'))
+        gifts.append(dims)
+    return gifts
+
+def part1(entries: list) -> int:
+    """part1 solver take a list and return an int"""
+    feet = 0
+    for gift in entries:
+        (length, width, height) = gift
+        side1 = length*width
+        side2 = length*height
+        side3 = width*height
+        feet += 2 * (side1 + side2 + side3) + min(side1, side2, side3)
+    return feet
+
+def part2(entries: list) -> int:
+    """part2 solver take a list and return an int"""
+    feet = 0
+    for gift in entries:
+        (length, width, height) = gift
+        mins = list(gift)
+        mins.remove(max(gift))
+        feet += length*width*height + 2*sum(mins)
+    return feet
+
+def test_input_day_2():
+    """pytest testing function"""
+    entries = extract(TEST_INPUT)
+    assert part1(entries) == 101
+    assert part2(entries) == 48
+
+def test_bench_day_2(benchmark):
+    """pytest-benchmark function"""
+    benchmark(main)
+
+def main():
+    """main function"""
+    input_path = str(pathlib.Path(__file__).resolve().parent.parent) + "/inputs/" + str(pathlib.Path(__file__).stem)
+    start_time = time.time()
+    input_data = read_input(input_path)
+    entries = extract(input_data)
+    print("Part 1: %d" % part1(entries))
+    print("Part 2: %d" % part2(entries))
+    end_time = time.time()
+    print("Execution time: %f" % (end_time-start_time))
+
+if __name__ == "__main__":
+    main()