Reverse

Write a function dict_reverse that returns a new dictionary with all the key-value pairs in the input dictionary reversed. That is, if there is a key "foo" in d with corresponding value 1, then there is a key 1 with corresponding value "foo" in the reversed dictionary. For a bigger example, if our input dictionary d looks like:

d = {'foo': 1, 'bar': 2, 'baz': 3}

Then dict_reverse(d) will return a dictionary that looks like:

{1: 'foo', 2: 'bar', 3: 'baz'}

For the purposes of this exercise, you can assume that any input dictionary has unique values, and each value is of a type that can be used as a dictionary key.

Relevant Readings - reverse lookup is somewhat relevant, but instead of looking up keys using values, you need to construct a new dictionary.

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