Bugs item #1358186, was opened at 2005-11-16 16:28
Message generated for change (Comment added) made by holle
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Category: Python Library
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Submitted By: Holger Lehmann (holle)
Assigned to: Nobody/Anonymous (nobody)
Summary: Incorrect handling of unicode "strings" in asynchat.py
Initial Comment:
While debugging my Zope installation using the
DeadLockDebugger along with the threadframe module
under Python 2.3 and 2.4 I stumbled upon a weird
behaviour of the method refill_buffer ind the class
async_chat in the file asynchat.py (Around line 198).
There is a special handling for strings:
[...]
elif isinstance(p, str):
self.producer_fifo.pop()
self.ac_out_buffer = self.ac_out_buffer + p
return
data = p.more()
[...]
Now, if p is an instance of string, it gets a special
handling and the function returns.
But if p is an instance of unicode, it does not get
the special handling, but dies in the line
data = p.more()
with the error, that unicode does not have a function
named more.
I was able to program a workaround by testing for str
or unicode. Please see the attached diff-file for
details. The code now works as expected.
I guess a better way would be to import types and
change the if into a "type(p) in types.StringTypes",
but I did not dare to do this.
I have not checked the code to see if there are more
conditionals broken the same way.
----------------------------------------------------------------------
>Comment By: Holger Lehmann (holle)
Date: 2005-11-16 16:34
Message:
Logged In: YES
user_id=332779
Just for the record:
I am using Linux 2.6.11 and Python 2.4 (SuSE 9.3)
as well as Linux 2.6.5 and Python 2.3.3 (SLES 9 Beta 4).
Both Python installations contain a sitecustomize.py with
the following content:
import sys
sys.setdefaultencoding('iso-8859-1')
The environment contains a variable LC_CTYPE set to:
de_DE.UTF-8
The Zope is a 2.7.3 compiled on both of the above machines
by myself.
----------------------------------------------------------------------
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