更改一个对象中的变量正在更新同一类的另一个对象的相同变量

Question

我编写了一个 Node 类并创建了三个对象，当我在第一个对象中分配一个变量的值时，第二个对象的相同变量正在更新，第三个对象也是如此。这是代码，

class Node:
    nodes_neighbour = []
    nodes_neighbour_loc = []

    def __init__(self,location):
        self.location = location

    def addNeighbours(self,neighbours):
        i = 0
        while(i < len(neighbours)):
            self.nodes_neighbour.append(neighbours[i])
            self.nodes_neighbour_loc.append(neighbours[i].location)

            i = i + 1

    def setCosts(self,g,f):
        self.g = g
        self.f = f



n1 = Node([10,10])
n2 = Node([50,10])
n3 = Node([90,10])

n1.addNeighbours([n2,n3])
print(n2.nodes_neighbour_loc)

它正在打印， [[50, 10], [90, 10]]

有什么问题？？ 在此先感谢:)

Answer 1

您的成员 nodes_neighbour 和 nodes_neighbour_loc 是该类的实例并且是共享的。你可能想要这个：

class Node:

    def __init__(self,location):
        self.location = location
        self.nodes_neighbour = []
        self.nodes_neighbour_loc = []