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This Python function should calculate compound interest but it's giving wrong results: def compound_interest(principal, rate, years) amount = principal * (1 + rate) ** years interest = amount - principl return interest
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def compound_interest(principal, rate, years)
amount = principal * (1 + rate) ** years
interest = amount - principl
return interest
: after the parameter list.
2. Typo: principl → should be principal (missing 'a').
3. Rate should be divided by 100 if passed as a percentage (e.g., 5 for 5%).
Fixed code:
def compound_interest(principal, rate, years):
"""Calculate compound interest.
rate: annual rate as percentage (e.g., 5 for 5%)
"""
decimal_rate = rate / 100
amount = principal * (1 + decimal_rate) ** years
interest = amount - principal
return round(interest, 2)>>> compound_interest(1000, 5, 10)
628.89 # $1000 at 5% for 10 years