Create new class instance from class method

Question

I want to be able to create a new instance of an object by calling a method on an already instantiated object. For example, I have the object:

organism = Organ

Answer 1

What about something like this:

class Organism(object):

    population = []

    def __init__(self, name):
        self.name = name
        self.population.append(self)
    def have_one_child(self, name):
        return Organism(name)
    def reproduce(self, names):
        return [self.have_one_child(name) for name in names]

Result:

>>> a = Organism('a')
>>> len(Organism.population)
1
>>> a.reproduce(['x', 'y', 'z']) # when one organism reproduces, children are added
                                 # to the total population
                                 # organism produces as many children as you state
[<__main__.Organism object at 0x05F23190>, <__main__.Organism object at 0x05F230F0>, <__main__.Organism object at 0x05F23230>]
>>> for ele in Organism.population:
...     print ele.name
... 
a
x
y
z
>>> Organism.population[3].reproduce(['f', 'g'])
[<__main__.Organism object at 0x05F231D0>, <__main__.Organism object at 0x05F23290>]
>>> for ele in Organism.population:
...     print ele.name
... 
a
x
y
z
f
g