创建KNN类

创建KNN类
由于数据集在二维平面内，所以在类的初始化函数中创造数据集的横纵坐标以及对应的标签。
class KNNDeal:
def init(self):
self.module = "这是绘制KNN的决策边界代码"
self.raw_data_X = [[3.85, 3.05],
[1.57, 2.63],
[4.28, 4.42],
[5.68, 3.64],
[1.94, 3.68],
[2.49, 2.66],
[0.49, 3.66],

                           [0.12, 1.12],
                           [2.25, 2.04],
                           [0.23, 0.54],
                           [1.33, 1.49],
                           [2.35, 0.09],
                           [1.46, 1.63],
                           [3.66, 3.93],

                           [5.11, 0.39],
                           [5.69, 1.14],
                           [4.03, 2.49],
                           [4.92, 1.62],
                           [5.26, 2.05],
                           [4.26, 2.05],
                           [5.84, 1.31]
                           ]
        self.raw_data_Y = [0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2];
        self.x_train = np.array(self.raw_data_X)
        self.y_train = np.array(self.raw_data_Y)