Solution #2296
Solution #2296
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Review Summary
This is a solid start, and the core logic for most of the arithmetic methods is correct. However, some changes are needed before this can be approved.
There's a functional bug in all the comparison methods (e.g., __lt__, __gt__). When you compare two Distance objects, your code tries to compare a number (self.km) with a Distance object (other), which will cause a TypeError. You need to handle the case where other is also a Distance instance by comparing self.km with other.km.
Additionally, the type annotations throughout the class need to be corrected to meet the project's requirements.
- You should add
from __future__ import annotationsat the top of the file to avoid using string-based hints like"Distance". [CHECKLIST ITEM #2.2] - The type hints for method parameters and return values are often incorrect. For example, in
__add__, theotherparameter should be typed asDistance | float | int, and the method should always returnDistance. [CHECKLIST ITEM #2.1]
Please address these points, and your code will be ready for approval!
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Important
Fix the issues, commit the changes, and then re-request my review using the Re-request review button2 in the Reviewers tab.
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Footnotes
app/main.py
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| @@ -1,3 +1,46 @@ | |||
| from __future__ import division | |||
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This import is not what is needed for this task. According to checklist item #2.2, you should use from __future__ import annotations to allow forward references in type hints (like using Distance inside the Distance class definition) without needing to use strings.
app/main.py
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| def __repr__(self) -> str: | ||
| return f"Distance(km={self.km})" | ||
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| def __add__(self, other: float | int) -> "float | int | Distance": |
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This violates checklist item #2.1. The type hint for other is incomplete; it should also accept a Distance object (Distance | float | int). Additionally, the return type should simply be Distance, as the method always returns a Distance instance.
app/main.py
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| else: | ||
| return Distance(self.km + other) |
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This else block is unnecessary because the preceding if block contains a return statement. This violates checklist item #1.1: 'Avoid unnecessary else statements'. You can remove the else and unindent the return statement.
app/main.py
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| else: | ||
| return Distance(self.km + other) | ||
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| def __iadd__(self, other: float) -> "float | int | Distance": |
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This violates checklist item #2.1. The type hint for other is incomplete; it should accept Distance | int | float. The return type hint is also incorrect and should be Distance, as __iadd__ should return self.
app/main.py
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| self.km += other | ||
| return self | ||
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| def __mul__(self, other: float) -> "float | Distance": |
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This violates checklist item #2.1. The type hint for other should be int | float to accept both integers and floats. The return type should be Distance since a new Distance instance is always returned.
app/main.py
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| return Distance(round((self.km / other), 2)) | ||
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| def __lt__(self, other: "Distance | float | int") -> bool: | ||
| return self.km < other |
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The logic here is brittle and might not work as expected in all cases. It currently relies on Python's rich comparison dispatching. A more explicit and readable implementation would check if other is a Distance instance and compare self.km with other.km accordingly.
app/main.py
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| return self.km < other | ||
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| def __gt__(self, other: "Distance | float | int") -> bool: | ||
| return self.km > other |
There was a problem hiding this comment.
The logic here is brittle and might not work as expected in all cases. It currently relies on Python's rich comparison dispatching. A more explicit and readable implementation would check if other is a Distance instance and compare self.km with other.km accordingly.
app/main.py
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| return self.km > other | ||
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| def __eq__(self, other: "Distance | float | int") -> bool: | ||
| return self.km == other |
There was a problem hiding this comment.
The logic here is brittle and might not work as expected in all cases. It currently relies on Python's rich comparison dispatching. A more explicit and readable implementation would check if other is a Distance instance and compare self.km with other.km accordingly.
app/main.py
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| return self.km == other | ||
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| def __le__(self, other: "Distance | float | int") -> bool: | ||
| return self.km <= other |
There was a problem hiding this comment.
The logic here is brittle and might not work as expected in all cases. It currently relies on Python's rich comparison dispatching. A more explicit and readable implementation would check if other is a Distance instance and compare self.km with other.km accordingly.
app/main.py
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| return self.km <= other | ||
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| def __ge__(self, other: "Distance | float | int") -> bool: | ||
| return self.km >= other |
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The logic here is brittle and might not work as expected in all cases. It currently relies on Python's rich comparison dispatching. A more explicit and readable implementation would check if other is a Distance instance and compare self.km with other.km accordingly.
…e/float check in all the comparison methods
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Review Summary
Great work on this submission! The logic for all the methods is correct, and the type annotations are well-implemented. Your code successfully meets all the functional requirements.
However, a few changes are needed to align with the project's style guidelines. Several methods use an else block immediately after an if block that contains a return. This is redundant and violates a checklist requirement [CHECKLIST ITEM #1.1]. You can simplify this by removing the else statement and un-indenting the code within it.
Additionally, the from __future__ import division import at the top of the file is not necessary for Python 3 and can be removed.
Once these style issues are addressed, your solution will be ready. Keep up the great effort!
✨ Please rate this review in the Platform's notification center1. I will be grateful for your feedback! ✨
Important
Fix the issues, commit the changes, and then re-request my review using the Re-request review button2 in the Reviewers tab.
Tip
If you have any comments about this review, please leave a message in the Add a comment section below and mention me with the @mateacademy-ai-mentor tag3.
I will read your message during my next review of your pull request. Please do not reply directly to my comments, as that feature is not supported yet.
Caution
Do not close the pull request until the review is complete. Closing it early can lead to unexpected behavior and disrupt the review process.
Footnotes
app/main.py
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| @@ -1,3 +1,62 @@ | |||
| from __future__ import division | |||
There was a problem hiding this comment.
In Python 3, true division (/) is the default behavior, so this import is no longer necessary and can be removed.
app/main.py
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| def __add__(self, other: float | int | Distance) -> Distance: | ||
| if isinstance(other, Distance): | ||
| return Distance(self.km + other.km) | ||
| else: |
There was a problem hiding this comment.
This else block is unnecessary. Since the if block above it contains a return, the code inside the else can be unindented and the else: line removed. This violates checklist item #1.1: 'Avoid unnecessary else statements'.
app/main.py
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| def __lt__(self, other: Distance | float | int) -> bool: | ||
| if isinstance(other, Distance): | ||
| return self.km < other.km | ||
| else: |
There was a problem hiding this comment.
This else is unnecessary because the preceding if block contains a return statement. This violates checklist item #1.1.
app/main.py
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| def __gt__(self, other: Distance | float | int) -> bool: | ||
| if isinstance(other, Distance): | ||
| return self.km > other.km | ||
| else: |
There was a problem hiding this comment.
This else block can be removed. According to checklist item #1.1, an else is not needed when the if block contains a return.
app/main.py
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| def __eq__(self, other: Distance | float | int) -> bool: | ||
| if isinstance(other, Distance): | ||
| return self.km == other.km | ||
| else: |
There was a problem hiding this comment.
This else block is unnecessary due to the return in the if block, which violates checklist item #1.1.
app/main.py
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| def __le__(self, other: Distance | float | int) -> bool: | ||
| if isinstance(other, Distance): | ||
| return self.km <= other.km | ||
| else: |
There was a problem hiding this comment.
As per checklist item #1.1, this else statement can be removed since the if block above it contains a return.
app/main.py
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| def __ge__(self, other: Distance | float | int) -> bool: | ||
| if isinstance(other, Distance): | ||
| return self.km >= other.km | ||
| else: |
There was a problem hiding this comment.
This else block is redundant because the if block always returns if its condition is met. This violates checklist item #1.1.
mateacademy-ai-mentor
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Review Summary
Excellent work on this submission! You've done a fantastic job addressing all the feedback from the previous review. The code is now much cleaner and more readable, especially with the removal of the redundant else blocks. Your solution fully complies with all project requirements and style guidelines. I am approving your solution, keep up the great work!
✨ Please rate this review in the Platform's notification center1. I will be grateful for your feedback! ✨
Footnotes
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