Vector of objects in Python

Question

I want to create a Node class, and one of its attributes is a Nodes vector (as in a chained list). Since Python does not declare the type of attribute, I have no idea dd how to do.

Answer 1

In a normal chained list each node has an attribute that represents the next node only and not a list:

class Nodo:
    def __init__(self, valor):
        self.valor = valor
        self.prox = None

If in your particular case you need to have an attribute which is a list for the various nodes you can do so:

class Nodo:
    def __init__(self, valor):
        self.valor = valor
        self.nodos = [] #lista de Nodos

Now in this list will add each Nodo as it needs using for example the function append:

self.nodos.append(Nodo(10))

Python does not declare the type of the attribute, but the type is built according to its value. This means that if you want to have a list of elements of a certain type, you only need to add such elements to the list.