Composite words

data = "cat; cats; catsdogcats; dog; dogcatsdog; hippopotamuses; rat; ratcatdogcat"


def func(data):
    WORDS_DELIMITER = '; '
    data = list(data.split(WORDS_DELIMITER))
    simple_words = [data[0]]
    composite_words = {}

    for current_word in data[1:]:
        for simple_word in simple_words:

            if simple_word in current_word and is_composite_word(current_word, simple_word, simple_words):
                composite_words[len(current_word)] = current_word
            else:
                simple_words.append(current_word)

    print("Простые слова: %s\n" % simple_words, "Длина сосотавного слова и значение: %s\n" % composite_words)
    return "Два самых длинных словосочетания: %s" % sorted(composite_words, key=lambda word_len: int(word_len))[-2:]


def is_composite_word(current_word, delimiter, simple_words):
    print(current_word, delimiter, simple_words)
    if not current_word:
        return True

    for split_word_part in current_word.split(delimiter, 1):

        print(split_word_part)

        if not split_word_part or split_word_part in simple_words:
            print('not split part: %s' % split_word_part)
            continue

        else:
            for simple_word in simple_words:
                print(simple_word, simple_words)
                if simple_word in split_word_part:
                    print('Simple word: %s ' % simple_word)
                    return is_composite_word(split_word_part, simple_word, simple_words)
                else:
                    return False

    return True