Prep Problem - 30

In this problem, you should write one function named longest_string. This function should have one parameter, which you can assume will be a list of dictionaries. The keys in each dictionary could be of various types, but you may assume that the values will be strings. The function should return the longest string value from all of the dictionaries in the list. For instance, the code:

data = [{'a':'horse', 'b':'caterpillar'}, {'a':'camp', 'c':'joker'}]
result = longest_string(data)
print(result)

Should print

caterpillar

And the code:

data = [{1:'abc', 5:'onetwothree'}, {2:'abcd'}, {7:'one two three'}]
result = longest_string(data)
print(result)

Should print

one two three

Make sure to include only the one function in your file. The gradescope tests will call the functions to test them. Name the program prep30.py. Make sure that gradescope gives you the points for passing the test case.