endless recursion using MetaPandasObject and MetaDataFrame

[Geekly]

This may not be relevant for python 2.7, so ignore if appropriate. The issue I'm seeing is with the metadframe.py module. Trying to run the module stand-alone, I see a recursion error while executing the example code under the

if __name__ == "__main__":
    meta_df = MetaDataFrame(abs(randn(3, 3)), index=['A', 'B', 'C'], columns=['c11', 'c22', 'c33'])`
    new = meta_df * 50.0`

Here's the error (part of it):

Traceback (most recent call last):
File "/Users/XXXXX/Projects/pybcm_proj/pybcm/metadframe.py", line 395, in
new = meta_df * 50.0
File "/Users/XXXXX/Projects/pybcm_proj/pybcm/metadframe.py", line 206, in mul
return self._transfer(self._frame.mul(x))
File "/Users/XXXXX/virtualenvs/pybcm/lib/python3.6/copy.py", line 161, in deepcopy
y = copier(memo)
File "/Users/XXXXX/Projects/pybcm_proj/pybcm/metadframe.py", line 177, in _framegetattr
dfout = self._transfer(out)
------------Many repeated lines of recursion here---------------
File "/Users/XXXXX/Projects/pybcm_proj/pybcm/metadframe.py", line 177, in _framegetattr
dfout = self._transfer(out)
File "/Users/XXXXX/Projects/pybcm_proj/pybcm/metadframe.py", line 140, in _transfer
self) # This looks like None, but is it type (MetaPandasObject, just union prints None
File "/Users/XXXXX/virtualenvs/pybcm/lib/python3.6/copy.py", line 161, in deepcopy
y = copier(memo)
File "/Users/XXXXX/Projects/pybcm_proj/pybcm/metadframe.py", line 173, in _framegetattr
out = getattr(self._frame, attr)(*fcnargs, **fcnkwargs)
File "/Users/XXXXX/virtualenvs/pybcm/lib/python3.6/site-packages/pandas/core/generic.py", line 3441, in deepcopy
return self.copy(deep=True)
File "/Users/XXXXX/virtualenvs/pybcm/lib/python3.6/site-packages/pandas/core/generic.py", line 3432, in copy
data = self._data.copy(deep=deep)
File "/Users/XXXXX/virtualenvs/pybcm/lib/python3.6/site-packages/pandas/core/internals.py", line 3432, in copy
new_axes = [copy(ax) for ax in self.axes]
File "/Users/XXXXX/virtualenvs/pybcm/lib/python3.6/site-packages/pandas/core/internals.py", line 3432, in
new_axes = [copy(ax) for ax in self.axes]
File "/Users/XXXXX/virtualenvs/pybcm/lib/python3.6/site-packages/pandas/core/internals.py", line 3431, in
copy = lambda ax: ax.view()
File "/Users/XXXXX/virtualenvs/pybcm/lib/python3.6/site-packages/pandas/core/indexes/base.py", line 712, in view
result = self._shallow_copy()
File "/Users/XXXXX/virtualenvs/pybcm/lib/python3.6/site-packages/pandas/core/indexes/base.py", line 410, in _shallow_copy
return self._simple_new(values, **attributes)
File "/Users/XXXXX/virtualenvs/pybcm/lib/python3.6/site-packages/pandas/core/indexes/base.py", line 387, in _simple_new
for k, v in compat.iteritems(kwargs):
RecursionError: maximum recursion depth exceeded

Any ideas how I can address this in py 3.6?