我要去哪里错了(AttributeError)

时间:2019-10-22 06:22:39

标签: python networkx attributeerror

我要去哪里错了

nodes=list(G.nodes())

完整的代码段中

def distribute_points(G,points): #takes two arguments
    nodes=list(G.nodes()) # get list of nodes and stores it in nodes variable
    new_points=[] #create a new points list/array
    #giving part
    for i in range(len(nodes)):  #itterating over len of list
        new_points.append(0) #intial points

    # reciving part
    for n in nodes: #iterating over nodes list
        out=list(G.out_edges(n)) #getting list of nodes
        if len (out)==0: #if a sink
            new_points[n]=new_points[n]+points[n] #completely give the share
        else:
            share=points[n]/len(out) #share equally point in n to len of out list
            for (src,tgt) in out: #giving target nodes the points in share of outgoing list
                new_points[tgt]=new_points[tgt]+share #new points of target = target+share its reciving.if not done previous value will change and we need to retain it

    return new_points #return new points

我在这里称它为:

def keep_distribting(G,points):
while (1):
    new_points=**distribute_points(G,points)** #base value
    print(new_points)
    points=new_points #new points will be old points at base for n no of itteration
    stop=input("Press 0 To Stop Or Any Key To Continue: ") #user input to stop by 0
    if stop=='0': 
        break
return new_point

因为有一个错误提示,我将它与相同的程序相匹配

我的错误弹出为:

  

回溯(最近通话最近一次):

     

文件“”,第1行,在       runfile('C:/ Users / Harsh / Desktop / Joy Of Computing NPTEL /第12周(Google的工作方式)/点数分配方法(页面排名).py',   wdir ='C:/ Users / Harsh / Desktop / Joy Of Computing NPTEL /第12周(如何使用Google   作品)')

     

文件   “ C:\ ProgramData \ Anaconda3 \ lib \ site-packages \ spyder_kernels \ customize \ spydercustomize.py”,   运行文件中的第786行       execfile(文件名,命名空间)

     

文件   “ C:\ ProgramData \ Anaconda3 \ lib \ site-packages \ spyder_kernels \ customize \ spydercustomize.py”,   第110行,在execfile中       exec(compile(f.read(),文件名,'exec'),命名空间)

     

文件“ C:/ Users / Harsh / Desktop / Joy Of Computing NPTEL /第12周(如何   Google Works)/点数分配方法(页面排名).py”,第87行,在          final_points = keep_distribting(points,G)

     

文件“ C:/ Users / Harsh / Desktop / Joy Of Computing NPTEL /第12周(如何   Google Works)/点数分配方法(页面排名).py”,第52行,在   keep_distribting       new_points = distribute_points(G,points)#基本值

     

文件“ C:/ Users / Harsh / Desktop / Joy Of Computing NPTEL /第12周(如何   Google Works)/点数分配方法(页面排名).py”,第30行,在   Distribution_points       nodes = list(G.nodes())#获取节点列表并将其存储在nodes变量中

     

AttributeError:“列表”对象没有属性“节点”

该代码段位于Page Rank

主要代码:

import networkx as nx
import matplotlib.pyplot as plt
import random

def add_edges():
    nodes=list(G.nodes())

    for s in nodes:  
        for t in nodes: 
            if s!=t:

                r=random.random()
                if r<=0.5:
                    G.add_edge(s,t)


    return G            

def assign_points(G):
    nodes=list(G.nodes())
    p=[] 
    for each in nodes:
        p.append(100)
    return p

def distribute_points(G,points): 
    nodes=list(G.nodes())  
    new_points=[]
    #giving part
    for i in range(len(nodes)): 
        new_points.append(0) 


    for n in nodes:
        out=list(G.out_edges(n)) 
        if len (out)==0: 
            new_points[n]=new_points[n]+points[n] 
        else:
            share=points[n]/len(out) 
            for (src,tgt) in out: 
                new_points[tgt]=new_points[tgt]+share
    return new_points 



def keep_distribting(G,points):
    while (1):
        new_points=distribute_points(G,points) 
        points=new_points
        stop=input("Press 0 To Stop Or Any Key To Continue: ") 
        if stop=='0': 
            break
    return new_points


def rank_by_point(final_points):
    d={}
    for i in range(len(points)):
        d[i]=points[i]
    sorted(d.items(),key=lambda  f:f[1])
    print(sorted(d.items(),key=lambda  f:f[1]))




G=nx.DiGraph()
G.add_nodes_from([i for i in range(10)])
G=add_edges()

nx.draw(G,with_labels=True)
plt.show()

points=assign_points(G)

final_points=keep_distribting(points,G)

rank_by_point(final_points)

result=nx.pagerank(G)
print(sorted(result.items(),key=lambda  f:f[1]))

1 个答案:

答案 0 :(得分:1)

问题出在这行代码上:

final_points=keep_distribting(points,G)

keep_distribting的定义对参数具有不同的顺序。定义为

def distribute_points(G,points):

因此在函数内部,G是以前的points,反之亦然。


您可能需要考虑的其他一些代码问题:

  • keep_distribting的拼写错误,因此遵循代码有点挑战。
  • 在您的某些函数中,G被视为全局变量,而在其他函数中,它被作为参数传递给函数。