[Baypiggies] TypeError in os.path.realpath

[Aahz]

On Wed, May 30, 2012, Lincoln Peters wrote:
>
> I'm developing a Python tool to monitor some of our Linux servers (running
> RHEL 5.6 and Python 2.4).  In some cases, I need to track down the
> executable file for a running process, which I should be able to by
> resolving the symlink at /proc/<PID>/cmd.  When I use the "readlink"
> command at the shell, it works correctly, but sometimes when I call
> os.path.realpath with the exact same path, I get a TypeError the following
> traceback (note: copied by hand since the servers have no Internet access):
> 
> File "/usr/lib64/python2.4/posixpath.py", line 423, in realpath
>   resolved = _resolve_link(component)
> File "/usr/lib64/python2.4/posixpath.py", line 440, in _resolve_link
>   while islink(path):
> File "/usr/lib64/python2.4/posixpath.py", line 159, in islink
>   st = os.lstat(path)
> TypeError: lstat() argument 1 must be (encoded string without NULL bytes),
> not str

How do you know it's the same path?  Any chance you could be having
unicode issues?
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

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