# How to extract value from tuple of tuples

I have list of this sort. It is the order list of a person:

```orderList  = [('apples', 2.0), ('pears', 3.0), ('limes', 4.0)]
#Here the second value is the quantity of the fruit to be purchased
```

How do I extract the string and the float value separately? I need to calculate the total order cost based on the given fruit prices:

```fruitPrices = {'apples':2.00, 'oranges': 1.50, 'pears': 1.75,
'limes':0.75, 'strawberries':1.00}
```

This is what I have tried:

```def buyLotsOfFruit(orderList):
"""
orderList: List of (fruit, numPounds) tuples

Returns cost of order
"""
totalCost = 0.0
length = len(orderList)
for i in range(0,length):
for j in range(0, length - i - 1):
totalCost += fruitPrices[orderList[i]] * orderList[j]
```

This yields wrong answer. What am I doing wrong? How can I fix this?

Thanks!

You might use unpacking together with `for` loop to get easy to read code, for example

```orderList  = [('apples', 2.0), ('pears', 3.0), ('limes', 4.0)]
fruitPrices = {'apples':2.00, 'oranges': 1.50, 'pears': 1.75,
'limes':0.75, 'strawberries':1.00}
total = 0.0
for name, qty in orderList:
total += qty * fruitPrices[name]
print(total)  # 12.25
```

Note `,` inside `for``in` so `name` values become 1st element of tuple and `qty` becomes 2nd element of tuple.