Simple Price Word Problem | Dataford Interview Questions

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Problem

Sparrow Foundation maintains a small produce price catalog. Given a dictionary mapping fruit names to prices in cents and a requested fruit name, return that fruit's price.

Implement fruit_price(prices, fruit). The requested fruit is guaranteed to exist in the catalog, so no missing-key behavior is required.

Formal Specification

Input: prices, a dictionary whose keys are lowercase fruit names and whose values are non-negative integer prices in cents; fruit, a lowercase string.
Output: Return the integer price associated with fruit.
Requirement: Use the fruit name as the dictionary key. Do not infer a price from the prices of other fruits.

Constraints

1 <= len(prices) <= 10^4
Each fruit name contains 1 to 30 lowercase English letters
0 <= prices[name] <= 10^6
fruit is guaranteed to be a key in prices

Function Signature

def fruit_price(prices, fruit):