Bugs item #1188175, was opened at 2005-04-22 16:02
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https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1188175&group_id=5470
Category: Python Library
Group: Python 2.3
Status: Open
Resolution: None
Priority: 5
Submitted By: Heiko Selber (drhok)
Assigned to: Nobody/Anonymous (nobody)
Summary: Pickle with HIGHEST_PROTOCOL "ord() expected..."
Initial Comment:
A Python script that I wrote contains a tree-like data
structure that cannot be unpickled when pickled with
protocol==-1 (or 2).
I attached the smallest example I could find.
If run with pickle, the result is:
Traceback (most recent call last):
File "D:\src\misc\CDROM\python\pickletest.py", line
68, in ?
tree=load( f )
File "C:\Python23\lib\pickle.py", line 1390, in load
return Unpickler(file).load()
File "C:\Python23\lib\pickle.py", line 872, in load
dispatch[key](self)
File "C:\Python23\lib\pickle.py", line 1189, in
load_binput
i = ord(self.read(1))
TypeError: ord() expected a character, but string of
length 0 found
But with cPickle, the result is:
Traceback (most recent call last):
File "D:\src\misc\CDROM\python\pickletest.py", line
68, in ?
tree=load( f )
EOFError
Small changes in the datastructure lead to different
results: try changing the line
if level<4:
to
if level<1:
Now cPickle works, but not pickle.
This happens with Python 2.3.3 and 2.3.5 on Windows
XP.
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