Code RoomExchange rate API hammered
MediumPrep Room Coding #1926

Exchange rate API hammered

Code reviewCode quality & reviewMid–Senior~18 min

Review this Python function that converts amounts using live FX rates. It is called for every line item on every invoice render, and the rates barely change during a day.

What a strong answer looks like

Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix, specific and kind.

0:00 of about 18 min
Mark a line and say what kind of problem it is.0 findings
1def to_usd(amount, currency):
2 rates = fetch_rates_from_api() # network call, returns dict by currency
3 return amount * rates[currency]
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