Day 3a

day3a.py

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+
+
+def main():
+    with open("input3.txt") as file:
+        lines = file.readlines()
+    grid = [list(line.strip()) for line in lines]
+    print(grid[0])
+    wrap = len(grid[0])
+    coords = [0,0] # x, y - across, down
+    trees = 0
+    while coords[1] < len(grid):
+        print(coords)
+        if grid[coords[1]][coords[0]] == "#":
+            trees += 1
+        coords[0] = coords[0] + 3
+        coords[1] = coords[1] + 1
+        if coords[0] >= wrap:
+            coords[0] = coords[0] - wrap
+    print(f"It's been a long toboggan trip, and I encountered {trees} trees.")
+
+
+if __name__ == "__main__":
+    main()