<pre><code># everything inherits from this
class SuperBase:
def __init__(self):
self.state_var = 3 # this should be copied into future objects
self.non_state_var = 0 # we don't want to copy this
def __getstate__(self):
return { 'state_var' : self.state_var }
def __str__(self):
return self.__class__.__name__ + '(' + str(vars(self)) + ')'
# some clases inherit from this
class Base(SuperBase):
def __init__(self):
SuperBase.__init__(self)
self.isflying = True # we want to copy this, this is state
self.sprite = "sprites/plane_generic.png" # we must drop this
def __getstate__(self):
state = SuperBase.__getstate__(self)
state['isflying'] = self.isflying
return state
class A144fighter(Base):
def __init__(self, teamname): # note required __init__ argument
Base.__init__(self)
self.colors = ["black", "grey"] # we want to copy this, this is state
self.name = teamname # we must drop this
def __getstate__(self):
state = Base.__getstate__(self)
state['colors'] = self.colors[:]
return state
plane = A144fighter("team_blue")
print plane
import copy
print copy.copy(plane)
# or manually:
import types
print types.InstanceType(plane.__class__, plane.__getstate__())
</code></pre>