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OPS435 Python Lab 4

2 bytes removed, 08:15, 21 June 2017
PART 3 - Dictionaries
print(value)
</source>Additional Information regarding Dictionaries:<ul><li>The values and keys can be looped over using the index as well
::#The '''range()''' function provides a list of numbers in a range.</li><li>The '''len()''' function provides a the number of items in a list.</li><li>Used together '''len()''' and '''range()''' can be used to create a list of usable indexes for a specific list</li></ul><br><br>Let's create a dictionary by using lists in order to store our dictionary data. First, we need to pair the keys and values of two separate lists.<br><br>
::#Issue the following:<source>
list_of_keys = list(dict_york.keys())
:::::'''create_dictionary()'''<ol><li>'''accepts''' two lists as arguments keys and values, '''combines''' these lists together to '''create''' a dictionary</li><li>'''returns a dictionary''' that has the keys and associated values from the lists</li></ol>
:::::'''split_dictionary()'''<ol><li>'''accepts''' a single dictionary as a argument and '''splits''' the dictionary into two lists, keys and values</li><li>'''returns two lists''': The return function can return multiple lists (separated by a comma). In our case, use: '''return keys, values'''</li></ol>
:::::'''shared_values()''' <ol><li>'''accepts''' two dictionaries as arguments and '''finds''' all values that are shared between the two dictionaries<br>('''Tip:''' generate lists containing only values for each dictionary, then use a function mentioned in a previous section to store the values that are common to <u>both</u> lists)</li><li>'''returns a set''' containing '''ONLY values''' found in '''BOTH dictionaries'''</li></ol>
:::*make sure the functions have the correct number of arguments required
:::*The script should show the exact output as the samples
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