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[andersonmedeiros-bot]

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[mateacademy-ai-mentor]

Review Summary

Your solution is approved because it correctly implements count_occurrences with the required signature and behavior, including case-insensitive counting and using string methods instead of explicit loops. The function in app/main.py (around the top of the file) converts both the phrase and the letter to lowercase and calls .count(), which matches the problem requirements and works for the provided examples.

As minor improvements, consider adding a short docstring to count_occurrences (near line 1 in app/main.py) explaining that it performs a case-insensitive count and clarifying what happens if letter is empty or more than one character. You might also add simple unit tests exercising the given examples and a few edge cases so that future changes don’t accidentally break the behavior. Overall, this is a clean, concise implementation that satisfies the task requirements; nice work.

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