擅长:python、mysql、java
<pre><code>fruitPrices = {'apples':2.00, 'oranges': 1.50, 'pears': 1.75,'limes':0.75,
'strawberries':1.00}
def buyLotsOfFruit(orderList):
## orderList: List of (fruit, numPounds) tuples
## Returns cost of order
totalCost = 0.0
for fruit,price in fruitPrices.items():
if fruit not in fruitPrices:
print 'not here!'
else:
#totalCost = totalCost +fruitPrices[fruitPrices.index(fruit)].key() * price
totalCost = totalCost +fruitPrices[fruit] * price
return totalCost
</code></pre>