pylint: upgrade to 1.3.1

third_party/logilab/common/daemon.py

 # copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
 # contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
 #
 # This file is part of logilab-common.
 #
 # logilab-common is free software: you can redistribute it and/or modify it under
 # the terms of the GNU Lesser General Public License as published by the Free
 # Software Foundation, either version 2.1 of the License, or (at your option) any
 # later version.
 #
 # logilab-common is distributed in the hope that it will be useful, but WITHOUT
 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 # FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
 # details.
 #
 # You should have received a copy of the GNU Lesser General Public License along
 # with logilab-common.  If not, see <http://www.gnu.org/licenses/>.
 """A daemonize function (for Unices)"""
 
 __docformat__ = "restructuredtext en"
 
 import os
 import errno
 import signal
 import sys
 import time
 import warnings
 
+from six.moves import range
+
 def setugid(user):
     """Change process user and group ID
 
     Argument is a numeric user id or a user name"""
     try:
         from pwd import getpwuid
         passwd = getpwuid(int(user))
     except ValueError:
         from pwd import getpwnam
         passwd = getpwnam(user)
 
     if hasattr(os, 'initgroups'): # python >= 2.7
         os.initgroups(passwd.pw_name, passwd.pw_gid)
     else:
         import ctypes
         if ctypes.CDLL(None).initgroups(passwd.pw_name, passwd.pw_gid) < 0:
             err = ctypes.c_int.in_dll(ctypes.pythonapi,"errno").value
             raise OSError(err, os.strerror(err), 'initgroups')
     os.setgid(passwd.pw_gid)
     os.setuid(passwd.pw_uid)
-    os.putenv('HOME', passwd.pw_dir)
+    os.environ['HOME'] = passwd.pw_dir
 
 
 def daemonize(pidfile=None, uid=None, umask=077):
     """daemonize a Unix process. Set paranoid umask by default.
 
     Return 1 in the original process, 2 in the first fork, and None for the
     second fork (eg daemon process).
     """
     # http://www.faqs.org/faqs/unix-faq/programmer/faq/
     #
@@ skipping 10 matching lines @@
     # move to the root to avoit mount pb
     os.chdir('/')
     # set umask if specified
     if umask is not None:
         os.umask(umask)
     # redirect standard descriptors
     null = os.open('/dev/null', os.O_RDWR)
     for i in range(3):
         try:
             os.dup2(null, i)
-        except OSError, e:
+        except OSError as e:
             if e.errno != errno.EBADF:
                 raise
     os.close(null)
     # filter warnings
     warnings.filterwarnings('ignore')
     # write pid in a file
     if pidfile:
         # ensure the directory where the pid-file should be set exists (for
         # instance /var/run/cubicweb may be deleted on computer restart)
         piddir = os.path.dirname(pidfile)
         if not os.path.exists(piddir):
             os.makedirs(piddir)
         f = file(pidfile, 'w')
         f.write(str(os.getpid()))
         f.close()
         os.chmod(pidfile, 0644)
     # change process uid
     if uid:
         setugid(uid)
     return None