面向对象例子

class SearchEngineBase(object):
    def __init__(self):
        pass

    def add_corpus(self, file_path):
        with open(file_path, 'r') as fin:
            text = fin.read()
        self.process_corpus(file_path, text)

    def process_corpus(self, id, text):
        raise Exception('process_corpus not implemented.')

    def search(self, query):
        raise Exception('search not implemented.')

def main(search_engine):
    for file_path in ['1.txt', '2.txt', '3.txt', '4.txt', '5.txt']:
	    ##遍历文件,将文件的内容放到字典,健 为文件名,值为内容
        search_engine.add_corpus(file_path)

    while True:
        query = input()
        results = search_engine.search(query)
        print('found {} result(s):'.format(len(results)))
        for result in results:
            print(result)










class SimpleEngine(SearchEngineBase):
    def __init__(self):
	    ##调用父类的构造函数
        super(SimpleEngine, self).__init__()
        self.__id_to_texts = {}

    def process_corpus(self, id, text):
	     ##键值为文件名,内容为值
        self.__id_to_texts[id] = text

    def search(self, query):
        results = []
		##搜索的词出现在字典的值中 返回内容
        for id, text in self.__id_to_texts.items():
            if query in text:
                results.append(id)
        return results

search_engine = SimpleEngine()
main(search_engine)


########## 输出 ##########


simple
found 0 result(s):
little
found 2 result(s):
1.txt
2.txt