Copy constructor in python?

Question

Is there a copy constructor in python ? If not what would I do to achieve something similar ?

The situation is that I am using a library and I have extended one of t

Answer 1

A simple example of my usual implementation of a copy constructor:

import copy

class Foo:

  def __init__(self, data):
    self._data = data

  @classmethod
  def from_foo(cls, class_instance):
    data = copy.deepcopy(class_instance._data) # if deepcopy is necessary
    return cls(data)