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Update main.py #13

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2 changes: 1 addition & 1 deletion main.py
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@ def nth_fibonacci_util(n, memo):

# Base case: if n is 0 or 1, return n
if n <= 1:
return n
return m
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@gemini-code-assist gemini-code-assist bot Dec 11, 2025

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critical

The variable m is not defined within the scope of the nth_fibonacci_util function. This will cause a NameError when the function is called with n <= 1. The correct implementation for the base case of the Fibonacci sequence is to return n.

Suggested change
return m
return n

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@codeant-ai codeant-ai bot Dec 11, 2025

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Suggestion: In the base case of the memoized Fibonacci helper, the function returns m, which is not defined in this scope; this will raise a NameError at runtime and also contradicts the comment that the base case should return n, so the return value should be n instead. [logic error]

Severity Level: Minor ⚠️

Suggested change
return m
return n
Why it matters? ⭐

The current helper nth_fibonacci_util returns m when n <= 1, but m is not defined anywhere in the function or module — this is a real runtime NameError and contradicts the intended base case (should return n). Replacing it with return n fixes a functional bug and aligns with the surrounding comments and other Fibonacci implementations in the file.

Prompt for AI Agent 🤖 
This is a comment left during a code review.

**Path:** main.py
**Line:** 21:21
**Comment:**
	*Logic Error: In the base case of the memoized Fibonacci helper, the function returns `m`, which is not defined in this scope; this will raise a NameError at runtime and also contradicts the comment that the base case should return `n`, so the return value should be `n` instead.

Validate the correctness of the flagged issue. If correct, How can I resolve this? If you propose a fix, implement it and please make it concise.

Comment on lines 19 to +21
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@coderabbitai coderabbitai bot Dec 11, 2025

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⚠️ Potential issue | 🔴 Critical

Fix undefined variable in nth_fibonacci_util base case (should return n).

The base case comment says "return n", but the code returns m, which is undefined and will raise a NameError whenever this branch executes.

Suggested fix:

 def nth_fibonacci_util(n, memo):
 
     # Base case: if n is 0 or 1, return n
     if n <= 1:
-        return m
+        return n
📝 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.

Suggested change
# Base case: if n is 0 or 1, return n
if n <= 1:
return n
return m
def nth_fibonacci_util(n, memo):
# Base case: if n is 0 or 1, return n
if n <= 1:
return n
🧰 Tools
🪛 Ruff (0.14.8)

21-21: Undefined name m

(F821)

🤖 Prompt for AI Agents 
In main.py around lines 19 to 21, the base case in nth_fibonacci_util
incorrectly returns an undefined variable `m` instead of `n`; update the return
expression to return `n` (i.e., when n <= 1, return n) so the base case matches
the comment and avoids a NameError.


# Check if the result is already in the memo table
if memo[n] != -1:
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