day 3 done, couldnt manage this one so got help

JP to come back to understand how this works

2023/day_3/part 2 solution.py

@@ -1,6 +1,73 @@
-import os
-
 with open(r'advent_of_code\2023\day_3\input.txt', 'r') as file:
-    input = file.read()
+    input = file.readlines()
 
-print(input)
+# print(input)
+
+test_input = '''467..114..
+...*......
+..35..633.
+......#...
+617*......
+.....+.58.
+..592.....
+......755.
+...$.*....
+.664.598..'''
+
+## remove when not test 
+## input = test_input
+## remove when not test 
+
+def get_directions(x_offset, y_offset):
+    for y in range(-1, 2):
+        for x in range(-1, 2):
+            yield x + x_offset, y + y_offset
+
+valid_map = [[0 for _ in range(len(input[0]))] for _ in range(len(input))]
+
+for i, row in enumerate(input[1:-1]):
+    for j, char in enumerate(row[1:-1]):
+        if not (char == "." or char.isnumeric()):
+            for x, y in get_directions(j + 1, i + 1):
+                valid_map[y][x] = 1
+
+current_number = '0'
+num_valid = False
+sm = 0
+
+for i, row in enumerate(input):
+    for j, char in enumerate(row):
+        if char.isnumeric():
+            num_valid = num_valid or valid_map[i][j]
+            current_number += char
+        else:
+            if num_valid:
+                sm += int(current_number)
+            num_valid = False
+            current_number = '0'
+
+print(sm)
+
+
+# Part 2
+def h_flood(x: int, y: int, m: int) -> str:
+    if not input[y][x].isnumeric():
+        return ""
+    flood = h_flood(x + m, y, m)
+    return f'{flood if m < 0 else ""}{input[y][x]}{flood if m > 0 else ""}'
+
+def get_surrounding(x: int, y: int) -> list:
+    return list(map(int, filter(lambda _: _,
+                                {h_flood(_x, _y, -1)[:-1] + h_flood(_x, _y, 1) for _x, _y in get_directions(x, y) if
+                                 input[_y][_x] != '*'})))
+
+
+total = 0
+
+for i, row in enumerate(input):
+    for j, char in enumerate(row):
+        if char == '*':
+            if len(nums := get_surrounding(j, i)) == 2:
+                total += nums[0] * nums[1]
+
+print(total)