multi_inherit_vs_procedural.py

class Tokenizer:
    """Tokenize text"""
    def __init__(self, text):
        print('Start Tokenizer.__init__()')
        self.tokens = text.split()
        print('End Tokenizer.__init__()')
        
    def describe(self):
        return self.tokens

class WordCounter(Tokenizer):
    """Count words in text"""
    def __init__(self, text):
        print('Start WordCounter.__init__()')
        super().__init__(text)
        self.word_count = len(self.tokens)
        print('End WordCounter.__init__()')

    def describe(self):
        return self.tokens, self.word_count        
        

class Vocabulary(Tokenizer):
    """Find unique words in text"""
    def __init__(self, text):
        print('Start init Vocabulary.__init__()')
        super().__init__(text)
        self.vocab = set(self.tokens)
        print('End init Vocabulary.__init__()')

    def describe(self):
        return self.tokens, self.vocab        


class TextDescriber(WordCounter, Vocabulary):
    """Describe text with multiple metrics"""
    def __init__(self, text):
        print('Start init TextDescriber.__init__()')
        super().__init__(text)
        print('End init TextDescriber.__init__()')

    def describe(self):
        return self.tokens, self.vocab, self.word_count


td = TextDescriber('row row row your boat')
print('--------')
for d in td.describe():
    print(d)
    

    
    
def text_describer(text):
    tokens = text.split()
    word_count = len(tokens)
    vocab = set(tokens)
    return tokens, vocab, word_count
    

tokens, vocab, word_count = text_describer('row row row your boat')
print('--------')
print(tokens)
print(vocab)
print(word_count)    

premature optimization is the root of all evil