與蟒蛇

Question

我是新來的蟒蛇，並有一些問題，傳遞對象參數的多個inheritens傳遞參數 我有類圖

class Graph: 
    def __init__(self,Name): 
     self.Name = Name 
     self.Nodes = {} 
     self.Edges = {} 
    def addEdgeAndNodes(self,sourceName,targetName): ''' code''' 
    def getEdgesCount(self):'''code ''' 
    def getNodesCount(self):''' code ''' 
#some more code 

和其他文件UpdateGraph類文件

import Graph 
class UpdateGraph(Graph.Graph): 
     def __init__(self,Name): 
      super().__init__(Name) 
     def addUpdateEdgeAndNodes(self,sourceName,targetName,sourceType,targetType,edgeType): 
#some more code 

和GraphBuilder文件中：

from Graph import Graph 
from UpdateGraph import UpdateGraph 
class GraphDFS: 
    def __init__(self,graph): 
     self.Graph = graph 
     self.dfsRes = {} 

    def dfs(self): 
     #some code 
     print("-->"+self.Graph.getNodesCount()) 

#some code 

class GraphBuilder: 
     def __init__(self): 
      self.Build() 

    def Build(self): 
      self.Graph = UpdateGraph(self.name) 

def main(): 
    Graph = GraphBuilder(name) 
    dfs = GraphDFS(Graph) 
    dfs.dfs() 

main() 

當我是試圖運行它引發錯誤的代碼： AttributeError的： 'GraphBuilder' 對象沒有屬性 'getNodesCount' 在行 打印（ 「 - >」 + self.Graph.getNodesCount（））

圖是updateGraph鍵入 我怎樣才能通過這個varible，它會通過圖形生成器功能來識別

Answer 1

def main(): 
    Graph = GraphBuilder(name) 
    dfs = GraphDFS(Graph) 
    dfs.dfs() 

你逝去的GraphBuilder的對象GraphDFS，self.Graph是GraphBuilder一個實例，你這個對象調用getNodesCount，這對象不包含這樣的方法。

from Graph import Graph 
from UpdateGraph import UpdateGraph 
class GraphDFS: 
    def __init__(self,graph): 
     self.Graph = graph 
     self.dfsRes = {} 

    def dfs(self): 
     #some code 
     print("-->"+self.Graph.getNodesCount()) 

#some code 

class GraphBuilder: 
    def __init__(self, name): 
     self.name = name 

    def Build(self): 
     self.Graph = UpdateGraph(self.name) 

def main(): 
    name = "" # define the name variable 
    Graph = GraphBuilder(name) 
    Graph.Build() 
    dfs = GraphDFS(Graph.Graph) 
    dfs.dfs() 

main() 

把上面的代碼中GrapthBuilder文件，這應該做工精細