hasattr prevents pickling of treedict objects

[antonbass]

There seems to be a side effect of calling the python builtin function hasattr on a treedict object that prevents it from pickling:

To recreate:

from pickle import dumps
from treedict import TreeDict
x = TreeDict(y=1)
dumps(x) # this works first time
hasattr(x,'something_random')  # returns True, incorrectly
dumps(x) # crashes during pickling

[hoytak]

Hmmm... I will look at this. Apologies for not responding earlier. This is odd.