python stack trace listdir

 --- modulename: install_lib, funcname: install
install_lib.py(114):         if os.path.isdir(self.build_dir):
 --- modulename: genericpath, funcname: isdir
genericpath.py(40):     try:
genericpath.py(41):         st = os.stat(s)
genericpath.py(44):     return stat.S_ISDIR(st.st_mode)
 --- modulename: stat, funcname: S_ISDIR
stat.py(41):     return S_IFMT(mode) == S_IFDIR
 --- modulename: stat, funcname: S_IFMT
stat.py(25):     return mode & 0170000
install_lib.py(115):             outfiles = self.copy_tree(self.build_dir, self.install_dir)
 --- modulename: cmd, funcname: copy_tree
cmd.py(373):         return dir_util.copy_tree(
cmd.py(374):             infile, outfile,
cmd.py(375):             preserve_mode,preserve_times,preserve_symlinks,
cmd.py(376):             not self.force,
cmd.py(377):             dry_run=self.dry_run)
 --- modulename: cmd, funcname: __getattr__
cmd.py(98):         if attr == 'dry_run':
cmd.py(99):             myval = getattr(self, "_" + attr)
cmd.py(100):             if myval is None:
cmd.py(101):                 return getattr(self.distribution, attr)
 --- modulename: dir_util, funcname: copy_tree
dir_util.py(124):     from distutils.file_util import copy_file
dir_util.py(126):     if not dry_run and not os.path.isdir(src):
 --- modulename: genericpath, funcname: isdir
genericpath.py(40):     try:
genericpath.py(41):         st = os.stat(s)
genericpath.py(44):     return stat.S_ISDIR(st.st_mode)
 --- modulename: stat, funcname: S_ISDIR
stat.py(41):     return S_IFMT(mode) == S_IFDIR
 --- modulename: stat, funcname: S_IFMT
stat.py(25):     return mode & 0170000
dir_util.py(129):     try:
dir_util.py(130):         names = os.listdir(src)
dir_util.py(131):     except os.error, (errno, errstr):
dir_util.py(132):         if dry_run:
dir_util.py(135):             raise DistutilsFileError, \
dir_util.py(136):                   "error listing files in '%s': %s" % (src, errstr)
core.py(152):         except KeyboardInterrupt:
core.py(154):         except (IOError, os.error), exc:
core.py(161):         except (DistutilsError,
core.py(162):                 CCompilerError), msg:
core.py(163):             if DEBUG:
core.py(166):                 raise SystemExit, "error: " + str(msg)
 --- modulename: trace, funcname: _unsettrace
trace.py(80):         sys.settrace(None)