I'm having problems with the class variable "adjList" in my class "NodeCreate". It seems that whenever I append to adjList, it's extended for all the objects of that class, not just the one I'm calling. I think I'm fundamentally misunderstanding something, but I can't figure out what I should be doing instead. How can I append to each object's adjList?
code:
import sys class FileReader: edgeList = [] def __init__(self, args): with open(args, 'r') as inFile: #get the node list self.nodeList = inFile.readline().strip().split() while 1: line = inFile.readline().strip() if not line: break self.edgeList.append(line) class NodeCreate: adjList = [] def __init__(self, name): self.name = name def main(): nodeObjDict = {} #read in nodes fr = FileReader(sys.argv[1]) #make node objects for node in fr.nodeList: nodeObjDict[node] = NodeCreate(node) #make smaller items from edgeList for item in fr.edgeList: itemList = item.split() #add adjacent lists nodeObjDict[itemList[0]].adjList.append(itemList[1]) print(nodeObjDict[itemList[0]].adjList) if __name__ == "__main__": main() input:
A B C D E F G A B A D A F B C B G C D What I end up getting for my printed output is something like: ['B', 'D', 'F', 'C', 'G', 'D'] even for A.adjList. I was expecting just ['B', 'D', 'F'].
