Question

我正在学习Windows上的python 2.7.13中的类构造。我收到错误：Sales实例没有属性__float_

任何提示如何使我的代码工作？如何避免这种错误？以下是我的代码

class Sales():
    # Sales predicts

    def __init__(self, df):
        # Each sales dataset has descriptive statistics.
        self.desc = df.describe()
        self.rows = len(df)
        self.cols = len(df.columns)
        self.counts = df['TARGET'].value_counts()
        self.plot = sns.countplot(x = 'TARGET', data = df, palette='hls')


    def sales_prob(self, df1, df2):
        """
        Function that computes logistic regression given a training and testing dataframes
        :param df1: historical dataframe (training)
        :param df2: monthly dataframe (testing)
        :return: df_out : dataframe containing predictions for the target 2
        """
        X_train0 = list(df1.loc[:, df1.columns != 'TARGET'])
        X_train = df1[X_train0]
        y_train = df1[['TARGET']]

        X_test0 = list(df2.loc[:, df2.columns != 'TARGET'])
        X_test = df2[X_test0]
        y_test = df2[['TARGET']]

        classifier = LogisticRegression(random_state=0)
        classifier.fit(self, X_train, y_train.values.ravel())
        y_pred2 =pd.DataFrame(classifier.predict_proba(self, X_test))
        y_pred2['prediction2'] = y_pred2[[2]]

        df_out = pd.merge(df2, y_pred2[['prediction2']], how = 'left', left_index=True, right_index=True)

        return (df_out)

# Example to use Sales class
venta = Sales(data1)
venta.desc
venta.cols

proba = venta.sales_prob(data1, data2)

这是我的追溯

Traceback（最近一次调用最后一次）：文件 “C：\文档\ Anaconda2 \ LIB \站点包\ IPython的\核心\ interactiveshell.py” 第2881行，在run_code中 exec（code_obj，self.user_global_ns，self.user_ns）文件“”，第1行，in proba = venta.sales_prob（data1，data2）文件“”，第29行，在sales_prob中 classifier.fit（self，X_train，y_train.values.ravel（））文件“C：\ Documents \ Anaconda2 \ Lib \ site-packages \ sklearn \ linear_model \ logistic.py”，第1173行，合适 order =“C”）文件“C：\ Documents \ Anaconda2 \ Lib \ site-packages \ sklearn \ utils \ validation.py”，第521行，在check_X_y中 ensure_min_features，warn_on_dtype，estimator）文件“C：\ Documents \ Anaconda2 \ Lib \ site-packages \ sklearn \ utils \ validation.py”，第382行，在check_array中 array = np.array（array，dtype = dtype，order = order，copy = copy）AttributeError：Sales实例没有属性' float ' traceback.print_tb

实例没有_float_属性

0 个答案: