Question

我描述了一个类，该类将服务器中的数据加载到数据框中，然后对其进行处理。这是我的代码（不包括导入库）：

    class Save(Data):
        def __init__(self, server, database, username, driver, group=None):
            super().__init__(server, database, username, driver)
            self.group = group

        def get_all_goods(self):
            goods_table = pd.read_sql_query(f''' SELECT [p_1], [p_2] 
                                  FROM [table] WHERE [group] = '{self.group}' ''',
                                  self.hndl)
            return goods_table

        def data_preprocessing(self):
            data_prepared = self.get_all_goods()
            data_prepared['desc'] = data_prepared[['p_1', 'p_2']].apply(lambda x: ' '.join(x), axis=1)
            return data_prepared

        @staticmethod
        def data_cleaning(str):
            words = []
            str = re.sub(r"(\w*(\.\w*))", ' ', str)
            str = re.sub(r"\d*\_\d*", ' ', str)
            for i in re.split('[;,.,\n,\s,:,-,+,(,),=,/,«,»,@,!,?,",_,*]',str):
                if len(i) > 1:
                    words.append(i)
            return words

        def data_morphy(self, text):
            morph = pymorphy2.MorphAnalyzer()
            tokens = [morph.parse(token)[0].normal_form for token in self.data_cleaning(text) if token != ' ']
            tokens = list(dict.fromkeys(tokens))
            text = ' '.join(tokens)
            return text

        def data_final(self):
            data_final = self.data_preprocessing()
            data_final['desc'] = data_final['desc'].apply(lambda x: self.data_morphy(x))
            return data_final

但是，当我运行代码时，它无法完成其工作，我等待了半个小时，但代码未执行。但是方法 get_all_goods 和 data_preprocessing 效果很好。我在哪里弄错了？

编辑：

当我使用cls.data_final()时出现错误：

    Traceback (most recent call last):
  File "C:\Program Files\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 3296, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-8-66905faafdf3>", line 103, in <module>
    cls.data_final()
  File "<ipython-input-8-66905faafdf3>", line 68, in data_final
    data_final['desc'] = data_final['desc'].apply(lambda x: self.data_morphy(x))
TypeError: 'method' object is not subscriptable

Answer 1

名称data_final作为数据框的名称和函数的名称被共享。当尝试将data_final['desc']用作熊猫数据框时，代码认为您正在尝试调用data_final()方法。这就是为什么您得到TypeError: 'method' object is not subscriptable

解决方案-将熊猫框架的名称更改为非函数名称，例如：

def data_final(self):
    dont_name_your_variables_the_same_as_your_functions = self.data_preprocessing()
    dont_name_your_variables_the_same_as_your_functions['desc'] = dont_name_your_variables_the_same_as_your_functions['desc'].apply(lambda x: self.data_morphy(x))
    return dont_name_your_variables_the_same_as_your_functions

：）

如何正确应用类方法？

1 个答案: