Antoine Pitrou <pit...@free.fr> added the comment:
The commit broke the Windows buildbots because (un)pickling a TextIOWrapper now
raises an exception:
>>> f = open("LICENSE")
>>> pickle.dumps(f)
b'\x80\x03c_io\nTextIOWrapper\nq\x00)\x81q\x01}q\x02X\x04\x00\x00\x00modeq\x03X\x01\x00\x00\x00rq\x04sb.'
>>> g = pickle.loads(pickle.dumps(f))
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: '_io.TextIOWrapper' object has no attribute '__dict__'
It should be noted that it didn't work before, but no exception was raised. The
result was just nonsensical:
>>> f = open("LICENSE")
>>> pickle.dumps(f)
b'\x80\x03c_io\nTextIOWrapper\nq\x00)\x81q\x01.'
>>> g = pickle.loads(pickle.dumps(f))
>>> g
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ValueError: I/O operation on uninitialized object
The very fact that test_multiprocessing tries to pickle a file object is
unfortunate, and is probably a bug in itself. test_multiprocessing is known for
pickling lots of things, since it generally transfers a whole TestCase
instance...
----------
assignee: -> pitrou
nosy: +jnoller
status: closed -> open
_______________________________________
Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue9935>
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