>>> import dill
>>> 
>>> class Foo:
...     y = 1
...     def bar( self, x ):
...         return x + Foo.y
... 
>>> f = Foo()
>>> 
>>> dill.dumps(f, byref=False, recurse=True)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/mmckerns/lib/python3.4/site-packages/dill-0.2.5.dev0-py3.4.egg/dill/dill.py", line 192, in dumps
    dump(obj, file, protocol, byref, fmode, recurse)#, strictio)
  File "/Users/mmckerns/lib/python3.4/site-packages/dill-0.2.5.dev0-py3.4.egg/dill/dill.py", line 186, in dump
    pik.dump(obj)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/pickle.py", line 412, in dump
    self.save(obj)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/pickle.py", line 524, in save
    self.save_reduce(obj=obj, *rv)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/pickle.py", line 598, in save_reduce
    save(cls)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/pickle.py", line 479, in save
    f(self, obj) # Call unbound method with explicit self
  File "/Users/mmckerns/lib/python3.4/site-packages/dill-0.2.5.dev0-py3.4.egg/dill/dill.py", line 1096, in save_type
    obj.__bases__, _dict), obj=obj)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/pickle.py", line 603, in save_reduce
    save(args)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/pickle.py", line 479, in save
    f(self, obj) # Call unbound method with explicit self
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/pickle.py", line 744, in save_tuple
    save(element)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/pickle.py", line 479, in save
    f(self, obj) # Call unbound method with explicit self

…

  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/pickle.py", line 479, in save
    f(self, obj) # Call unbound method with explicit self
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/pickle.py", line 713, in save_str
    self.memoize(obj)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/pickle.py", line 435, in memoize
    self.write(self.put(idx))
RuntimeError: maximum recursion depth exceeded