tests/readlink.py

py3: call codecs.escape_encode() directly

string_escape doesn't exist on Python 3, but fortunately the undocumented
codecs.escape_encode() function exists on CPython 2.6, 2.7, 3.5 and PyPy 5.6.
So let's use it for now.

http://stackoverflow.com/a/23151714

#!/usr/bin/env python

from __future__ import absolute_import, print_function

import errno
import os
import sys

for f in sys.argv[1:]:
    try:
        print(f, '->', os.readlink(f))
    except OSError as err:
        if err.errno != errno.EINVAL:
            raise
        print(f, '->', f, 'not a symlink')

sys.exit(0)