我有以下两类:功能没有被覆盖的子类
class Shape(object):
def __init__(self, start_point, *args):
self.vertices = []
self.__make_vertices(start_point, *args)
def __make_vertices(self, start_point, *args):
print "Not Implemented: __make_vertices"
def __getitem__(self, *args):
return self.vertices.__getitem__(*args)
class Cube(Shape):
def __init__(self, start_point, side_length):
Shape.__init__(self, start_point, side_length)
def __make_vertices(self, start_point, side_length):
append = self.vertices.append
start_point = Vector(*(start_point))
i, j, k = side_length*I, side_length*J, side_length*K
append(start_point)
append(self.vertices[-1] - k)
append(self.vertices[-1] - j)
append(self.vertices[-1] + k)
append(self.vertices[-1] - i)
append(self.vertices[-1] - k)
append(self.vertices[-1] + j)
append(self.vertices[-1] + k)
print self.vertices
当我提出一个新的Cube
,我期望我在多维数据集类中定义的__make_vertices
函数将被调用,而是我一直获取Shape
类__make_vertices
函数打印出的消息。我误解了什么?
http://php.net/manual/en/language.oop5.overloading.php – 2013-12-22 18:00:25
@Allendar:这是Python,而不是PHP。 – BrenBarn
对不起,我在笔记本电脑后面睡着了,嘿嘿,我的坏:) – 2013-12-22 18:04:49