Vector of objects in Python

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Vector of objects in Python

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#1 by (2 votes)

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

python

asked by anonymous 03.02.2018 / 06:03

1 answer

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score 2 · Accepted Answer

In a normal threaded 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 that is a list for the various nodes you can do this:

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

Now in this list you will add each Nodo as you need to use, for example, the append function:

self.nodos.append(Nodo(10))

In Python the type of the attribute is not declared, 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 elements of that type to the list.