Hi, Dear my friends,
I has been using python for a while. But I just realized that when you make a copy of python class, it is copying a link to the class. So when you make the change to the attritutes of objects, it will change other attributes in other copied objects. That is not what I want. I have 30+ attributes in the class. SO I do not want to copy attribute by attributes. I tried copy.deepcopy but not work. Is there any suggestions on this? Many thanks inadvance.