Solution #1259
Solution #1259
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You've done a great job here, but there are just a few things that need tweaking. Remember to avoid using mutable default arguments to prevent unexpected behaviour. Also, try to split up complex logical expressions for better readability. Keep up the good work! 😊
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app/main.py
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| ) -> None: | ||
| self.name = name | ||
| self.weight = weight | ||
| self.coords = coords if coords is not None else [0, 0] |
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The use of a mutable default argument in a function or method can lead to unexpected behaviour. In Python, default arguments are evaluated once when the function is defined, not each time the function is called. This means that if you use a mutable default argument and mutate it, you will mutate that object for all future calls to the function as well. Here, you should avoid using a mutable default argument (coords: list = None) and instead use a sentinel to denote that no argument was provided. The sentinel (in this case None) should then be handled inside the function or method.
| self, | ||
| name: str, | ||
| weight: int, | ||
| coords: list = None |
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This is a repeat of the previous comment. Mutable default arguments can lead to unexpected behaviour. Instead, use a sentinel (like None) to denote that no argument was provided and handle this inside the function or method.
| weight: int, | ||
| max_load_weight: int, | ||
| current_load: None, | ||
| coords: list = None |
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The current_load parameter is set to None which is not a type. It would be better to use Optional[Cargo] from the typing module to denote that current_load can be either a Cargo instance or None.
app/main.py
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| self.current_load = current_load | ||
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| def hook_load(self, cargo: Cargo) -> None: | ||
| if self.current_load is None and cargo.weight <= self.max_load_weight: |
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This line contains a lot of logic. It might be good to split it up for readability. First, check if self.current_load is None, then if cargo.weight is less than or equal to self.max_load_weight. This is a code style issue.
| self.current_load = cargo | ||
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| def unhook_load(self) -> None: | ||
| self.current_load = None |
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This method sets self.current_load to None regardless of whether there's a load or not. It might be a good idea to first check if there's a load to unhook. If there isn't, you could either do nothing or raise an exception. This is a code quality issue.
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Hey there! 👋 You're doing a great job, but there's a few things that need to be addressed. Make sure your unhook_load method returns the unhooked cargo and check if current_load is None before hooking a new one in hook_load method. Also, don't forget to validate if current_load is an instance of Cargo class. Keep up the good work! 😊
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| current_load: Cargo, | ||
| coords: list = None | ||
| ) -> None: | ||
| super().__init__(name, weight, coords) |
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You're not checking if the current_load parameter is an instance of Cargo class. It's important to validate the input to avoid potential errors in the future.
app/main.py
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| def hook_load(self, cargo: Cargo) -> None: | ||
| if self.current_load is None: | ||
| if cargo.weight <= self.max_load_weight: | ||
| self.current_load = cargo | ||
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| def unhook_load(self) -> None: |
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Your hook_load method allows to hook the cargo even if there is already one. You should add a condition to check if current_load is None before hooking a new one.
| self.current_load = cargo | ||
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| def unhook_load(self) -> None: | ||
| self.current_load = None |
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The unhook_load method sets current_load to None, but it doesn't return the unhooked load. It might be useful to return the unhooked cargo so that you can use it later.
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Great job overall! There are a few issues to be addressed, though. The handling for the case when the cargo weight is greater than the max load weight needs improvement. It would be better to raise an exception or print a message to let the user know that the cargo is too heavy. Also, the unhook_load method should return the current_load before setting it to None to avoid losing the current load. Lastly, avoid using mutable default arguments to prevent unexpected behavior. Keep up the good work and always strive to improve. 🚀
✨ Please rate this review in the Platform's notification center. I will be grateful for your feedback! ✨
| self.name = name | ||
| self.weight = weight | ||
| if coords is None: | ||
| coords = [0, 0] |
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It's not recommended to use mutable default arguments in Python. It can lead to unexpected behavior. Instead, use None and then assign the default value inside the function.
| coords: list = None | ||
| ) -> None: | ||
| if coords is None: | ||
| coords = [0, 0, 0] |
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Same issue as before, avoid using mutable default arguments. Use None and then assign the default value inside the function.
| self.current_load = cargo | ||
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| def unhook_load(self) -> Cargo: | ||
| self.current_load = None |
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The unhook_load method should return the current_load before setting it to None. Otherwise, the current load is lost and cannot be accessed after it's unhooked.
| def hook_load(self, cargo: Cargo) -> None: | ||
| if self.current_load is None: | ||
| if cargo.weight <= self.max_load_weight: | ||
| self.current_load = cargo |
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There's no handling for the case when the cargo weight is greater than the max load weight. It would be better to raise an exception or print a message to let the user know that the cargo is too heavy.
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