Infinite recursion with __getattr__ when pickling/unpickling StreamWrapper (Python 2.7)

[robahlgren]

The following error is repeated when attempting to unpickle (using dill) an object with a sys.stdout reference. (for example, spawning a process with a reference to a logger.)

>>> import dill
>>> from colorama.ansitowin32 import StreamWrapper
>>> dill.loads(dill.dumps(StreamWrapper(None, None)))

File "C:\...\lib\site-packages\colorama\ansitowin32.py", line 33, in __getattr__
  return getattr(self.__wrapped, name)
File "C:\...\lib\site-packages\colorama\ansitowin32.py", line 33, in __getattr__
  return getattr(self.__wrapped, name)
File "C:\...\lib\site-packages\colorama\ansitowin32.py", line 33, in __getattr__
  return getattr(self.__wrapped, name)
RuntimeError: maximum recursion depth exceeded

It appears simply adding setstate and getstate to StreamWrapper fixes the issue:

def __setstate__(self, state):
    self.__dict__ = state

def __getstate__(self):
    return self.__dict__