Serhiy Storchaka added the comment:
This error is from cPickle.
>>> import xml.etree.cElementTree as ET
>>> root = ET.XML('<data/>')
>>> import pickle
>>> pickle.dumps(root)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.7/pickle.py", line 1380, in dumps
Pickler(file, protocol).dump(obj)
File "/usr/lib/python2.7/pickle.py", line 224, in dump
self.save(obj)
File "/usr/lib/python2.7/pickle.py", line 331, in save
self.save_reduce(obj=obj, *rv)
File "/usr/lib/python2.7/pickle.py", line 400, in save_reduce
save(func)
File "/usr/lib/python2.7/pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "/usr/lib/python2.7/pickle.py", line 754, in save_global
(obj, module, name))
pickle.PicklingError: Can't pickle <function copyelement at 0x7f8acaf5b758>:
it's not found as __main__.copyelement
>>> import cPickle
>>> cPickle.dumps(root)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: expected string or Unicode object, NoneType found
cElementTree.Element is not pickleable in Python 2. And I think it is too later
to add this feature in 2.7. The obvious solution -- use Python 3.
----------
nosy: +eli.bendersky, scoder, serhiy.storchaka
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue31467>
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