Adding calculator app #21
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📝 WalkthroughWalkthroughA new Calculator.py module is introduced containing four arithmetic functions (add, subtract, multiply, divide) with division-by-zero protection, paired with an interactive command-line interface that prompts users for operation selection and operands. Changes
Estimated code review effort🎯 2 (Simple) | ⏱️ ~10 minutes Poem
🚥 Pre-merge checks | ✅ 2 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (2 passed)
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Actionable comments posted: 2
🤖 Fix all issues with AI agents
In `@Calculator.py`:
- Around line 24-25: The conversions to float for num1 and num2 lack validation
and will raise ValueError on non-numeric input; change the logic so you
repeatedly prompt until a valid float is entered (e.g., implement a helper like
get_float_input(prompt) that wraps float(input(...)) in a try/except ValueError
loop and returns a float), and replace the direct assignments to num1 and num2
with calls to that helper so invalid input is handled gracefully instead of
crashing.
- Around line 16-36: The CLI block runs at import time; wrap the interactive
prompt and choice-handling logic inside a main guard by moving the printed menu,
input() calls, and the if/elif chain that calls add, subtract, multiply, divide
into a function (e.g., main()) and call that function only under if __name__ ==
"__main__": so importing Calculator won't execute the prompts.
🧹 Nitpick comments (1)
Calculator.py (1)
10-13: Mixed return type individe()is problematic.The function returns either a
floator astr, which can cause issues for callers who expect a numeric result. Consider raising aValueErrororZeroDivisionErrorinstead, or returningNonefor error cases.♻️ Suggested fix: raise an exception for consistency
def divide(a, b): if b == 0: - return "Error: Division by zero" + raise ZeroDivisionError("Cannot divide by zero") return a / bThen update the caller to handle the exception:
elif choice == "4": try: print("Result:", divide(num1, num2)) except ZeroDivisionError as e: print("Error:", e)
📜 Review details
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Review profile: CHILL
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📒 Files selected for processing (1)
Calculator.py
🔇 Additional comments (1)
Calculator.py (1)
1-8: LGTM!The
add,subtract, andmultiplyfunctions are clean and correct implementations.
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| print("=== Simple Calculator ===") | ||
| print("1. Add") | ||
| print("2. Subtract") | ||
| print("3. Multiply") | ||
| print("4. Divide") | ||
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| choice = input("Enter choice (1/2/3/4): ") | ||
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||
| num1 = float(input("Enter first number: ")) | ||
| num2 = float(input("Enter second number: ")) | ||
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| if choice == "1": | ||
| print("Result:", add(num1, num2)) | ||
| elif choice == "2": | ||
| print("Result:", subtract(num1, num2)) | ||
| elif choice == "3": | ||
| print("Result:", multiply(num1, num2)) | ||
| elif choice == "4": | ||
| print("Result:", divide(num1, num2)) | ||
| else: | ||
| print("Invalid choice") No newline at end of file |
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Missing if __name__ == "__main__": guard.
The CLI code executes immediately when the module is loaded. This prevents reusing the functions via import Calculator without triggering the interactive prompts.
🛠️ Wrap CLI in main guard
+def main():
+ print("=== Simple Calculator ===")
+ print("1. Add")
+ print("2. Subtract")
+ print("3. Multiply")
+ print("4. Divide")
+
+ choice = input("Enter choice (1/2/3/4): ")
+
+ num1 = float(input("Enter first number: "))
+ num2 = float(input("Enter second number: "))
+
+ if choice == "1":
+ print("Result:", add(num1, num2))
+ elif choice == "2":
+ print("Result:", subtract(num1, num2))
+ elif choice == "3":
+ print("Result:", multiply(num1, num2))
+ elif choice == "4":
+ print("Result:", divide(num1, num2))
+ else:
+ print("Invalid choice")
+
+if __name__ == "__main__":
+ main()
-print("=== Simple Calculator ===")
-print("1. Add")
-print("2. Subtract")
-print("3. Multiply")
-print("4. Divide")
-
-choice = input("Enter choice (1/2/3/4): ")
-
-num1 = float(input("Enter first number: "))
-num2 = float(input("Enter second number: "))
-
-if choice == "1":
- print("Result:", add(num1, num2))
-elif choice == "2":
- print("Result:", subtract(num1, num2))
-elif choice == "3":
- print("Result:", multiply(num1, num2))
-elif choice == "4":
- print("Result:", divide(num1, num2))
-else:
- print("Invalid choice")🤖 Prompt for AI Agents
In `@Calculator.py` around lines 16 - 36, The CLI block runs at import time; wrap
the interactive prompt and choice-handling logic inside a main guard by moving
the printed menu, input() calls, and the if/elif chain that calls add, subtract,
multiply, divide into a function (e.g., main()) and call that function only
under if __name__ == "__main__": so importing Calculator won't execute the
prompts.
| num1 = float(input("Enter first number: ")) | ||
| num2 = float(input("Enter second number: ")) |
There was a problem hiding this comment.
No input validation for numeric conversion.
float() will raise ValueError if the user enters non-numeric input, crashing the program. Wrap in try/except for a better user experience.
🛠️ Add input validation
-num1 = float(input("Enter first number: "))
-num2 = float(input("Enter second number: "))
+try:
+ num1 = float(input("Enter first number: "))
+ num2 = float(input("Enter second number: "))
+except ValueError:
+ print("Invalid input. Please enter numeric values.")
+ exit(1)📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| num1 = float(input("Enter first number: ")) | |
| num2 = float(input("Enter second number: ")) | |
| try: | |
| num1 = float(input("Enter first number: ")) | |
| num2 = float(input("Enter second number: ")) | |
| except ValueError: | |
| print("Invalid input. Please enter numeric values.") | |
| exit(1) |
🤖 Prompt for AI Agents
In `@Calculator.py` around lines 24 - 25, The conversions to float for num1 and
num2 lack validation and will raise ValueError on non-numeric input; change the
logic so you repeatedly prompt until a valid float is entered (e.g., implement a
helper like get_float_input(prompt) that wraps float(input(...)) in a try/except
ValueError loop and returns a float), and replace the direct assignments to num1
and num2 with calls to that helper so invalid input is handled gracefully
instead of crashing.
1 participant
Added a new calculator app in python
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