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def calculate_discount(price, discount_pct):
final_price = price - (price * discount_pct)
return final_price
print(calculate_discount(100, "20%"))Discount is passed as the string "20%". This will raise TypeError.
No bounds check on price or discount_pct before computation.
Annotate args as float for IDE + lint support.
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Bug detection
Logic errors, type mismatches, edge cases — flagged with line numbers and concrete fixes.
Security audit
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Clean rewrite
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