Bugs item #1611753, was opened at 2006-12-08 10:45
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Category: Python Library
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Wayne Christopher (wayne606)
Assigned to: Nobody/Anonymous (nobody)
Summary: can't pickle NAN's in binary mode
Initial Comment:
I think the problem is that pack(">d", float("nan")) does not work. Same for
Inf. This works fine with pickle in ascii mode. I tried this on SuSE 10.0,
x86_64.
Python 2.4.2 (#2, Sep 10 2006, 23:53:27)
[GCC 4.1.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pickle
>>> foo = [1, 2, float("nan")]
>>> foo
[1, 2, nan]
>>> fp = file("/tmp/xxx", "wb")
>>> pickle.dump(foo, fp, -1)
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "/home/software/64/lib/python2.4/pickle.py", line 1382, in dump
Pickler(file, protocol, bin).dump(obj)
File "/home/software/64/lib/python2.4/pickle.py", line 231, in dump
self.save(obj)
File "/home/software/64/lib/python2.4/pickle.py", line 293, in save
f(self, obj) # Call unbound method with explicit self
File "/home/software/64/lib/python2.4/pickle.py", line 614, in save_list
self._batch_appends(iter(obj))
File "/home/software/64/lib/python2.4/pickle.py", line 647, in _batch_appends
save(x)
File "/home/software/64/lib/python2.4/pickle.py", line 293, in save
f(self, obj) # Call unbound method with explicit self
File "/home/software/64/lib/python2.4/pickle.py", line 489, in save_float
self.write(BINFLOAT + pack('>d', obj))
SystemError: frexp() result out of range
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