Fix MAX_WORD_LENGTH parsing

src/boggler/boggler.py

@@ -11,11 +11,13 @@ if __name__ == '__main__':
     board = read_boggle_file(Path(sys.argv[1]))
     if len(sys.argv) == 3:
         boggle_board = BoggleBoard(board)
-        print(boggle_board)
-        boggle_tree = build_full_boggle_tree(boggle_board, Path(sys.argv[2]))
     elif len(sys.argv) == 4:
         try:
             boggle_board = BoggleBoard(board, int(sys.argv[3]))
+        except ValueError:
+            print("Invalid MAX_WORD_LENGTH. Please try again with a valid integer.")
+            sys.exit(1)
+    try:
         boggle_tree = build_full_boggle_tree(boggle_board, Path(sys.argv[2]))
 
         print("\nBOARD")