python读取文本数据到矩阵（用于scikit-learn输入）

def load_data():    train = numpy.loadtxt(open("D:\\dev_src\\python\\weibo_keywords\\extra_dict\\word_feature_train.csv", "rb"), delimiter=",", skiprows=0)    test = numpy.loadtxt(open("D:\\dev_src\\python\\weibo_keywords\\extra_dict\\word_feature_test.csv", "rb"), delimiter=",", skiprows=0)    train_x = train[:,0:2]    train_y = train[:,2]