solution

app/main.py

@@ -2,4 +2,78 @@ class Cargo:
  def __init__(self, weight: int) -> None:
  self.weight = weight
 
-# write your code here
+
+class BaseRobot:
+ def __init__(
+ self, name: str, weight: int, coords: list[int] = None
+ ) -> None:
+ if coords is None:
+ coords = [0, 0]
+ self.name = name
+ self.weight = weight
+ self.coords = coords
+
+ def go_forward(self, step: int = 1) -> list[int]:
+ self.coords[1] += step
+ return self.coords
+
+ def go_back(self, step: int = 1) -> list[int]:
+ self.coords[1] -= step
+ return self.coords
+
+ def go_right(self, step: int = 1) -> list[int]:
+ self.coords[0] += step
+ return self.coords
+
+ def go_left(self, step: int = 1) -> list[int]:
+ self.coords[0] -= step
+ return self.coords
+
+ def get_info(self) -> str:
+ return f"Robot: {self.name}, Weight: {self.weight}"
+
+
+class FlyingRobot(BaseRobot):
+ def __init__(
+ self, name: str, weight: int, coords: list[int] = None
+ ) -> None:
+ super().__init__(
+ name, weight, coords if coords is not None else [0, 0, 0]
+ )
+
+ def go_up(self, step: int = 1) -> list[int]:
+ self.coords[2] += step
+ return self.coords
+
+ def go_down(self, step: int = 1) -> list[int]:
+ self.coords[2] -= step
+ return self.coords
+
+
+class DeliveryDrone(FlyingRobot):
+ def __init__(
+ self, name: str, weight: int, max_load_weight: int,
+ coords: list[int] = None, current_load: Cargo = None
+ ) -> None:
+ super().__init__(name, weight, coords)
+ self.max_load_weight = max_load_weight
+ self.current_load = current_load
+
+ def hook_load(self, cargo: Cargo) -> str:
+ if self.current_load is not None:
+ return "Cannot hook load. There is already cargo hooked."
+ elif cargo.weight > self.max_load_weight:
+ return (
+ f"Cannot hook load. The cargo is too heavy: "
+ f"{cargo.weight} > {self.max_load_weight}."
+ )
+ self.current_load = cargo
+ return f"Cargo weighing {cargo.weight} hooked successfully."
+
+ def unhook_load(self) -> str:
+ if self.current_load is None:
+ return "No cargo to unhook."
+
+ unhooked_cargo = self.current_load
+ self.current_load = None
+ return f"Cargo weighing {unhooked_cargo.weight} unhooked successfully."