# The built-in <string>.split() procedure works
# okay, but fails to find all the words on a page
# because it only uses whitespace to split the
# string. To do better, we should also use punctuation
# marks to split the page into words.

# Define a procedure, split_string, that takes two
# inputs: the string to split and a string containing
# all of the characters considered separators. The
# procedure should return a list of strings that break
# the source string up by the characters in the
# splitlist.

def split_string(source,splitlist):
    n = 0
    length = len(splitlist)
    while n < length:
        searchitem = splitlist[n]
        if searchitem in source:
            source = source.replace(searchitem,'!')
        n+=1
    return source.split('!')

['This', 'is', 'a', 'test', 'of', 'the', 'string', 'separation', 'code', '']
['After', '', 'the', 'flood', '', '', '', '', '', '', '', 'all', 'the', 'colors', 'came', 'out', '']
['First Name', 'Last Name', 'Street Address', 'City', 'State', 'Zip Code']