Fix Python 3 bugs discovered by pylint

In Python 3 exception instances no longer have a message attribute.
For most exceptions, str(e) or string formatting give the same result.

Fix some renamed modules, module members and functions.

https://fedorahosted.org/freeipa/ticket/4985

Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Martin Basti <mbasti@redhat.com>

ipalib/krb_utils.py

@@ -161,7 +161,7 @@ def get_credentials(name=None, ccache_name=None):
         return gssapi.Credentials(usage='initiate', name=name, store=store)
     except gssapi.exceptions.GSSError as e:
         if e.min_code == KRB5_FCC_NOFILE:  # pylint: disable=no-member
-            raise ValueError('"%s", ccache="%s"' % (e.message, ccache_name))
+            raise ValueError('"%s", ccache="%s"' % (e, ccache_name))
         raise
 
 def get_principal(ccache_name=None):

ipapython/ipaldap.py

@@ -27,7 +27,10 @@ import contextlib
 import collections
 import os
 import pwd
-from urlparse import urlparse
+
+# pylint: disable=import-error
+from six.moves.urllib.parse import urlparse
+# pylint: enable=import-error
 
 import ldap
 import ldap.sasl

ipaserver/install/dns.py

@@ -132,7 +132,7 @@ def install_check(standalone, api, replica, options, hostname):
             if options.force or options.allow_zone_overlap:
                 root_logger.warning("%s Please make sure that the domain is "
                                     "properly delegated to this IPA server.",
-                                    e.message)
+                                    e)
             else:
                 raise e
 
@@ -141,7 +141,7 @@ def install_check(standalone, api, replica, options, hostname):
             dnsutil.check_zone_overlap(reverse_zone)
         except ValueError as e:
             if options.force or options.allow_zone_overlap:
-                root_logger.warning(e.message)
+                root_logger.warning(six.text_type(e))
             else:
                 raise e
 

ipaserver/plugins/aci.py

@@ -354,7 +354,7 @@ def _aci_to_kw(ldap, a, test=False, pkey_only=False):
                 try:
                     targetdn = DN(target.replace('ldap:///',''))
                 except ValueError as e:
-                    raise errors.ValidationError(name='subtree', error=_("invalid DN (%s)") % e.message)
+                    raise errors.ValidationError(name='subtree', error=_("invalid DN (%s)") % e)
                 if targetdn.endswith(DN(api.env.container_group, api.env.basedn)):
                     kw['targetgroup'] = targetdn[0]['cn']
                 else:

ipaserver/plugins/dns.py

@@ -2149,7 +2149,7 @@ class DNSZoneBase_add(LDAPCreate):
             try:
                 check_zone_overlap(keys[-1], raise_on_error=False)
             except ValueError as e:
-                raise errors.InvocationError(e.message)
+                raise errors.InvocationError(six.text_type(e))
 
         return dn
 

ipatests/i18n.py

@@ -32,6 +32,8 @@ import traceback
 import polib
 from collections import namedtuple
 
+import six
+
 '''
 We test our translations by taking the original untranslated string
 (e.g. msgid) and prepend a prefix character and then append a suffix
@@ -610,8 +612,14 @@ def test_translations(po_file, lang, domain, locale_dir):
 
     t = gettext.translation(domain, locale_dir)
 
-    get_msgstr = t.ugettext
-    get_msgstr_plural = t.ungettext
+    if six.PY2:
+        # pylint: disable=no-member
+        get_msgstr = t.ugettext
+        get_msgstr_plural = t.ungettext
+        # pylint: enable=no-member
+    else:
+        get_msgstr = t.gettext
+        get_msgstr_plural = t.ngettext
 
     return po_file_iterate(po_file, get_msgstr, get_msgstr_plural)
 

ipatests/test_integration/env_config.py

@@ -114,8 +114,8 @@ def config_from_env(env):
         try:
             import yaml
         except ImportError as e:
-            raise ImportError("%s, please install PyYAML package to fix it" %
-                              e.message)
+            raise ImportError(
+                "%s, please install PyYAML package to fix it" % e)
         with open(env['IPATEST_YAML_CONFIG']) as file:
             confdict = yaml.safe_load(file)
             return Config.from_dict(confdict)

ipatests/test_integration/tasks.py

@@ -1032,7 +1032,8 @@ def install_topo(topo, master, replicas, clients, domain_level=None,
 
 def install_clients(servers, clients):
     """Install IPA clients, distributing them among the given servers"""
-    for server, client in itertools.izip(itertools.cycle(servers), clients):
+    izip = getattr(itertools, 'izip', zip)
+    for server, client in izip(itertools.cycle(servers), clients):
         log.info('Installing client %s on %s' % (server, client))
         install_client(server, client)
 

ipatests/test_integration/test_idviews.py

@@ -68,7 +68,7 @@ class TestCertsInIDOverrides(IntegrationTest):
         # Initialize NSS database
         tasks.run_certutil(master, ["-N", "-f", cls.pwname], cls.reqdir)
         # Now generate self-signed certs for a windows user
-        stdin_text = string.digits+string.letters[2:] + '\n'
+        stdin_text = string.digits+string.ascii_letters[2:] + '\n'
         tasks.run_certutil(master, ['-S', '-s',
                                     "cn=%s,dc=ad,dc=test" % cls.adcert1, '-n',
                                     cls.adcert1, '-x', '-t', 'CT,C,C', '-v',

ipatests/test_xmlrpc/test_automount_plugin.py

@@ -106,7 +106,7 @@ class AutomountTest(XMLRPC_test):
                     skipped=(),
                     duplicatemaps=(),
                     duplicatekeys=(),
-                )), res)
+                )), res)  # pylint: disable=used-before-assignment
             self.check_tofiles()
         finally:
             res = api.Command['automountlocation_del'](self.locname)['result']