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'''
Create three dictionaries: lloyd, alice, and tyler.
Give each dictionary the keys "name", "homework", "quizzes", and "tests".
Have the "name" key be the name of the student (that is, lloyd's name should be "Lloyd") 
and the other keys should be an empty list.
'''


lloyd = {
    "name":"Lloyd",

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# Now you need your compute_bill function to take the stock/inventory of a particular item into account when computing the cost.

Ultimately, if an item isn't in stock, then it shouldn't be included in the total. You can't buy or sell what you don't have!


shopping_list = ["banana", "orange", "apple"]

stock = {
    "banana": 6,
    "apple": 0,

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# Create a new dictionary called prices using {} format like the example above.
# Put these values in your prices dictionary, in between the {}:

prices = {
    "banana": 4,
    "apple": 2,
    "orange": 1.5,
    "pear": 3
}

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# Strings are like lists with characters as elements. You can loop through strings the same way 

for letter in "Codecademy":
    print letter
    
# Empty lines to make the output pretty
print
print

word = "Programming is fun!"

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# Functions can also take lists as inputs and perform various operations on those lists.

def count_small(numbers):
    total = 0
    for n in numbers:
        if n < 10:
            total = total + 1
    return total

lost = [4, 8, 15, 16, 23, 42]

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# The blocks of code in a for loop can be as big or as small as they need to be.

# While looping, you may want to perform different actions depending on the particular item in the list.

# example

numbers = [1, 3, 4, 7]
for number in numbers: 
    if number > 6:
        print number

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# You can also use a for loop on a dictionary to loop through its keys with the following:

# A simple dictionary
d = {"foo" : "bar"}

for key in d: 
    print d[key]  # prints "bar" 

# Note that dictionaries are unordered, meaning that any time you loop through a dictionary, 
# you will go through every key, but you are not guaranteed to get them in any particular order.

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# for loops allow us to iterate through all of the elements in a list from the left-most (or zeroth element) 
# to the right-most element. A sample loop would be structured as follows:

a = ["List of some sort”]
for x in a: 
    # Do something for every x
    
# This loop will run all of the code in the indented block under the for x in a: statement. 
# The item in the list that is currently being evaluated will be x. So running the following:

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# Let's go over a few last notes about dictionaries

my_dict = {
    "fish": ["c", "a", "r", "p"],
    "cash": -4483,
    "luck": "good"
}
print my_dict["fish"][0]

# 1. In the example above, we created a dictionary that holds many types of values.

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# Sometimes you need to remove something from a list.

# example 

beatles = ["john","paul","george","ringo","stuart"]
beatles.remove("stuart")
print beatles


backpack = ['xylophone', 'dagger', 'tent', 'bread loaf']