Make pylint happy

- fix super-with-arguments
- ignore raise-missing-from - too many intentional usages

.pylintrc

@@ -13,6 +13,7 @@ extension-pkg-whitelist=lxml.etree
 disable=
   bad-continuation,
   raising-format-tuple,
+  raise-missing-from,
   import-outside-toplevel,
   inconsistent-return-statements,
   duplicate-code,

qubesadmin/app.py

@@ -167,7 +167,7 @@ class QubesBase(qubesadmin.base.PropertyHolder):
     cache_enabled = False
 
     def __init__(self):
-        super(QubesBase, self).__init__(self, 'admin.property.', 'dom0')
+        super().__init__(self, 'admin.property.', 'dom0')
         self.domains = VMCollection(self)
         self.labels = qubesadmin.base.WrapperObjectsCollection(
             self, 'admin.label.List', qubesadmin.label.Label)
@@ -454,19 +454,19 @@ class QubesBase(qubesadmin.base.PropertyHolder):
                     ['qvm-appmenus', '--init', '--update',
                      '--source', src_vm.name, dst_vm.name]
                 subprocess.check_output(appmenus_cmd, stderr=subprocess.STDOUT)
-            except OSError:
+            except OSError as e:
                 # this file needs to be python 2.7 compatible,
                 # so no FileNotFoundError
                 self.log.error('Failed to clone appmenus, qvm-appmenus missing')
                 if not ignore_errors:
                     raise qubesadmin.exc.QubesException(
-                        'Failed to clone appmenus')
+                        'Failed to clone appmenus') from e
             except subprocess.CalledProcessError as e:
                 self.log.error('Failed to clone appmenus: %s',
                                e.output.decode())
                 if not ignore_errors:
                     raise qubesadmin.exc.QubesException(
-                        'Failed to clone appmenus')
+                        'Failed to clone appmenus') from e
 
         except qubesadmin.exc.QubesException:
             if not ignore_errors:

qubesadmin/backup/core2.py

@@ -38,7 +38,7 @@ class Core2VM(qubesadmin.backup.BackupVM):
     '''VM object'''
     # pylint: disable=too-few-public-methods
     def __init__(self):
-        super(Core2VM, self).__init__()
+        super().__init__()
         self.backup_content = False
 
     @property
@@ -148,7 +148,7 @@ class Core2Qubes(qubesadmin.backup.BackupApp):
             raise ValueError("store path required")
         self.qid_map = {}
         self.log = logging.getLogger('qubesadmin.backup.core2')
-        super(Core2Qubes, self).__init__(store)
+        super().__init__(store)
 
     def load_globals(self, element):
         '''Load global settings

qubesadmin/backup/core3.py

@@ -57,7 +57,7 @@ class Core3Qubes(qubesadmin.backup.BackupApp):
             raise ValueError("store path required")
         self.log = logging.getLogger('qubesadmin.backup.core3')
         self.labels = {}
-        super(Core3Qubes, self).__init__(store)
+        super().__init__(store)
 
     @staticmethod
     def get_property(xml_obj, prop):

qubesadmin/backup/restore.py

@@ -82,7 +82,7 @@ _tar_file_size_re = re.compile(r"^[^ ]+ [^ ]+/[^ ]+ *([0-9]+) .*")
 class BackupCanceledError(QubesException):
     '''Exception raised when backup/restore was cancelled'''
     def __init__(self, msg, tmpdir=None):
-        super(BackupCanceledError, self).__init__(msg)
+        super().__init__(msg)
         self.tmpdir = tmpdir
 
 def init_supported_hmac_and_crypto():
@@ -361,7 +361,7 @@ class ExtractWorker3(Process):
         :param bool verify_only: only verify data integrity, do not extract
         :param dict handlers: handlers for actual data
         '''
-        super(ExtractWorker3, self).__init__()
+        super().__init__()
         #: queue with files to extract
         self.queue = queue
         #: paths on the queue are relative to this dir
@@ -904,14 +904,14 @@ class BackupRestore(object):
         USERNAME_MISMATCH = object()
 
         def __init__(self, vm, subdir=None):
-            super(BackupRestore.Dom0ToRestore, self).__init__(vm)
+            super().__init__(vm)
             if subdir:
                 self.subdir = subdir
                 self.username = os.path.basename(subdir)
 
     def __init__(self, app, backup_location, backup_vm, passphrase,
                  location_is_service=False, force_compression_filter=None):
-        super(BackupRestore, self).__init__()
+        super().__init__()
 
         #: qubes.Qubes instance
         self.app = app

qubesadmin/base.py

@@ -345,7 +345,7 @@ class PropertyHolder(object):
 
     def __setattr__(self, key, value):
         if key.startswith('_') or key in self._local_properties():
-            return super(PropertyHolder, self).__setattr__(key, value)
+            return super().__setattr__(key, value)
         if value is qubesadmin.DEFAULT:
             try:
                 self.qubesd_call(
@@ -371,7 +371,7 @@ class PropertyHolder(object):
 
     def __delattr__(self, name):
         if name.startswith('_') or name in self._local_properties():
-            return super(PropertyHolder, self).__delattr__(name)
+            return super().__delattr__(name)
         try:
             self.qubesd_call(
                 self._method_dest,

qubesadmin/devices.py

@@ -115,7 +115,7 @@ class UnknownDevice(DeviceInfo):
                  **kwargs):
         if description is None:
             description = "Unknown device"
-        super(UnknownDevice, self).__init__(backend_domain, devclass, ident,
+        super().__init__(backend_domain, devclass, ident,
                                             description, **kwargs)
 
 
@@ -295,7 +295,7 @@ class DeviceManager(dict):
     """
 
     def __init__(self, vm):
-        super(DeviceManager, self).__init__()
+        super().__init__()
         self._vm = vm
 
     def __missing__(self, key):

qubesadmin/exc.py

@@ -25,7 +25,7 @@ class QubesException(Exception):
     '''Base exception for all Qubes-related errors.'''
     def __init__(self, message_format, *args, **kwargs):
         # TODO: handle translations
-        super(QubesException, self).__init__(
+        super().__init__(
             message_format % tuple(int(d) if d.isdigit() else d for d in args),
             **kwargs)
 
@@ -164,7 +164,7 @@ class DeviceAlreadyAttached(QubesException, KeyError):
 class BackupRestoreError(QubesException):
     '''Restoring a backup failed'''
     def __init__(self, msg, backup_log=None):
-        super(BackupRestoreError, self).__init__(msg)
+        super().__init__(msg)
         self.backup_log = backup_log
 
 # pylint: disable=too-many-ancestors
@@ -177,8 +177,7 @@ class QubesPropertyAccessError(QubesDaemonAccessError, AttributeError):
     '''Failed to read/write property value, cause is unknown (insufficient
     permissions, no such property, invalid value, other)'''
     def __init__(self, prop):
-        super(QubesPropertyAccessError, self).__init__(
-            'Failed to access \'%s\' property' % prop)
+        super().__init__('Failed to access \'%s\' property' % prop)
 
 # legacy name
 QubesDaemonNoResponseError = QubesDaemonAccessError

qubesadmin/features.py

@@ -35,7 +35,7 @@ class Features(object):
     # pylint: disable=too-few-public-methods
 
     def __init__(self, vm):
-        super(Features, self).__init__()
+        super().__init__()
         self.vm = vm
 
     def __delitem__(self, key):

qubesadmin/firewall.py

@@ -53,7 +53,7 @@ class RuleChoice(RuleOption):
     '''Base class for multiple-choices rule elements'''
     # pylint: disable=abstract-method
     def __init__(self, value):
-        super(RuleChoice, self).__init__(value)
+        super().__init__(value)
         self.allowed_values = \
             [v for k, v in self.__class__.__dict__.items()
                 if not k.startswith('__') and isinstance(v, str) and
@@ -148,7 +148,7 @@ class DstHost(RuleOption):
                 except socket.error:
                     raise ValueError('Invalid IP address: ' + host)
 
-        super(DstHost, self).__init__(value)
+        super().__init__(value)
 
     @property
     def rule(self):
@@ -175,7 +175,7 @@ class DstPorts(RuleOption):
             raise ValueError('Ports out of range')
         if self.range[0] > self.range[1]:
             raise ValueError('Invalid port range')
-        super(DstPorts, self).__init__(
+        super().__init__(
             str(self.range[0]) if self.range[0] == self.range[1]
             else '{!s}-{!s}'.format(*self.range))
 
@@ -188,7 +188,7 @@ class DstPorts(RuleOption):
 class IcmpType(RuleOption):
     '''ICMP packet type'''
     def __init__(self, value):
-        super(IcmpType, self).__init__(value)
+        super().__init__(value)
         value = int(value)
         if value < 0 or value > 255:
             raise ValueError('ICMP type out of range')
@@ -212,7 +212,7 @@ class SpecialTarget(RuleChoice):
 class Expire(RuleOption):
     '''Rule expire time'''
     def __init__(self, value):
-        super(Expire, self).__init__(value)
+        super().__init__(value)
         self.datetime = datetime.datetime.utcfromtimestamp(int(value))
 
     @property

qubesadmin/label.py

@@ -46,7 +46,7 @@ class Label(object):
                 qubesd_response = self.app.qubesd_call(
                     'dom0', 'admin.label.Get', self._name, None)
             except qubesadmin.exc.QubesDaemonNoResponseError:
-                raise AttributeError
+                raise qubesadmin.exc.QubesPropertyAccessError('label.color')
             self._color = qubesd_response.decode()
         return self._color
 
@@ -63,13 +63,13 @@ class Label(object):
 
     @property
     def index(self):
-        '''color specification as in HTML (``#abcdef``)'''
+        '''label numeric identifier'''
         if self._index is None:
             try:
                 qubesd_response = self.app.qubesd_call(
                     'dom0', 'admin.label.Index', self._name, None)
             except qubesadmin.exc.QubesDaemonNoResponseError:
-                raise AttributeError
+                raise qubesadmin.exc.QubesPropertyAccessError('label.index')
             self._index = int(qubesd_response.decode())
         return self._index
 

qubesadmin/spinner.py

@@ -91,7 +91,7 @@ class QubesSpinner(AbstractSpinner):
 
     This spinner uses standard ASCII control characters'''
     def __init__(self, *args, **kwargs):
-        super(QubesSpinner, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         self.hidelen = 0
         self.cub1 = '\b'
 
@@ -120,7 +120,7 @@ class QubesSpinnerEnterpriseEdition(QubesSpinner):
         if charset is None:
             charset = ENTERPRISE_CHARSET if self.stream_isatty else '.'
 
-        super(QubesSpinnerEnterpriseEdition, self).__init__(stream, charset)
+        super().__init__(stream, charset)
 
         if self.stream_isatty:
             try:

qubesadmin/tags.py

@@ -31,7 +31,7 @@ class Tags(object):
     # pylint: disable=too-few-public-methods
 
     def __init__(self, vm):
-        super(Tags, self).__init__()
+        super().__init__()
         self.vm = vm
 
     def remove(self, elem):

qubesadmin/tools/__init__.py

@@ -62,7 +62,7 @@ class PropertyAction(argparse.Action):
             metavar='NAME=VALUE',
             required=False,
             help='set property to a value'):
-        super(PropertyAction, self).__init__(option_strings, 'properties',
+        super().__init__(option_strings, 'properties',
             metavar=metavar, default={}, help=help)
 
     def __call__(self, parser, namespace, values, option_string=None):
@@ -99,7 +99,7 @@ class SinglePropertyAction(argparse.Action):
         if const is not None:
             nargs = 0
 
-        super(SinglePropertyAction, self).__init__(option_strings, 'properties',
+        super().__init__(option_strings, 'properties',
             metavar=metavar, help=help, default={}, const=const,
             nargs=nargs)
 
@@ -141,7 +141,7 @@ class VmNameAction(QubesAction):
                     nargs, "Passed unexpected value {!s} as {!s} nargs ".format(
                         nargs, dest))
 
-        super(VmNameAction, self).__init__(option_strings, dest=dest, help=help,
+        super().__init__(option_strings, dest=dest, help=help,
                                            nargs=nargs, **kwargs)
 
     def __call__(self, parser, namespace, values, option_string=None):
@@ -200,11 +200,11 @@ class RunningVmNameAction(VmNameAction):
                 raise argparse.ArgumentError(
                     nargs, "Passed unexpected value {!s} as {!s} nargs ".format(
                         nargs, dest))
-        super(RunningVmNameAction, self).__init__(
+        super().__init__(
             option_strings, dest=dest, help=help, nargs=nargs, **kwargs)
 
     def parse_qubes_app(self, parser, namespace):
-        super(RunningVmNameAction, self).parse_qubes_app(parser, namespace)
+        super().parse_qubes_app(parser, namespace)
         for vm in namespace.domains:
             if not vm.is_running():
                 parser.error_runtime("domain {!r} is not running".format(
@@ -220,7 +220,7 @@ class VolumeAction(QubesAction):
     def __init__(self, help='A pool & volume id combination',
                  required=True, **kwargs):
         # pylint: disable=redefined-builtin
-        super(VolumeAction, self).__init__(help=help, required=required,
+        super().__init__(help=help, required=required,
                                            **kwargs)
 
     def __call__(self, parser, namespace, values, option_string=None):
@@ -261,7 +261,7 @@ class VMVolumeAction(QubesAction):
     def __init__(self, help='A pool & volume id combination',
                  required=True, **kwargs):
         # pylint: disable=redefined-builtin
-        super(VMVolumeAction, self).__init__(help=help, required=required,
+        super().__init__(help=help, required=required,
                                            **kwargs)
 
     def __call__(self, parser, namespace, values, option_string=None):
@@ -339,7 +339,7 @@ class QubesArgumentParser(argparse.ArgumentParser):
 
     def __init__(self, vmname_nargs=None, **kwargs):
 
-        super(QubesArgumentParser, self).__init__(add_help=False, **kwargs)
+        super().__init__(add_help=False, **kwargs)
 
         self._vmname_nargs = vmname_nargs
 
@@ -370,7 +370,7 @@ class QubesArgumentParser(argparse.ArgumentParser):
         # pylint: disable=arguments-differ,signature-differs
         # hack for tests
         app = kwargs.pop('app', None)
-        namespace = super(QubesArgumentParser, self).parse_args(*args, **kwargs)
+        namespace = super().parse_args(*args, **kwargs)
 
         self.set_qubes_verbosity(namespace)
         if app is not None:
@@ -472,8 +472,7 @@ class AliasedSubParsersAction(argparse._SubParsersAction):
             dest = name
             if aliases:
                 dest += ' (%s)' % ','.join(aliases)
-            super(AliasedSubParsersAction._AliasedPseudoAction, self).\
-                __init__(option_strings=[], dest=dest, help=help)
+            super().__init__(option_strings=[], dest=dest, help=help)
 
         def __call__(self, parser, namespace, values, option_string=None):
             pass
@@ -485,8 +484,7 @@ class AliasedSubParsersAction(argparse._SubParsersAction):
         else:
             aliases = []
 
-        local_parser = super(AliasedSubParsersAction, self).add_parser(
-            name, **kwargs)
+        local_parser = super().add_parser(name, **kwargs)
 
         # Make the aliases work.
         for alias in aliases:
@@ -532,7 +530,7 @@ class VmNameGroup(argparse._MutuallyExclusiveGroup):
 
     def __init__(self, container, required, vm_action=VmNameAction, help=None):
         # pylint: disable=redefined-builtin
-        super(VmNameGroup, self).__init__(container, required=required)
+        super().__init__(container, required=required)
         if not help:
             help = 'perform the action on all qubes'
         self.add_argument('--all', action='store_true', dest='all_domains',

qubesadmin/tools/qvm_device.py

@@ -163,7 +163,7 @@ class DeviceAction(qubesadmin.tools.QubesAction):
                  required=True, allow_unknown=False, **kwargs):
         # pylint: disable=redefined-builtin
         self.allow_unknown = allow_unknown
-        super(DeviceAction, self).__init__(help=help, required=required,
+        super().__init__(help=help, required=required,
                                            **kwargs)
 
     def __call__(self, parser, namespace, values, option_string=None):

qubesadmin/tools/qvm_ls.py

@@ -141,9 +141,7 @@ class PropertyColumn(Column):
 
     def __init__(self, name):
         ls_head = name.replace('_', '-').upper()
-        super(PropertyColumn, self).__init__(
-            head=ls_head,
-            attr=name)
+        super().__init__(head=ls_head, attr=name)
 
     def __repr__(self):
         return '{}(head={!r}'.format(
@@ -201,9 +199,7 @@ class FlagsColumn(Column):
     # pylint: disable=no-self-use
 
     def __init__(self):
-        super(FlagsColumn, self).__init__(
-            head='FLAGS',
-            doc=self.__class__.__doc__)
+        super().__init__(head='FLAGS', doc=self.__class__.__doc__)
 
 
     @flag(1)
@@ -505,7 +501,7 @@ class _HelpColumnsAction(argparse.Action):
             dest=argparse.SUPPRESS,
             default=argparse.SUPPRESS,
             help='list all available columns with short descriptions and exit'):
-        super(_HelpColumnsAction, self).__init__(
+        super().__init__(
             option_strings=option_strings,
             dest=dest,
             default=default,
@@ -536,7 +532,7 @@ class _HelpFormatsAction(argparse.Action):
             dest=argparse.SUPPRESS,
             default=argparse.SUPPRESS,
             help='list all available formats with their definitions and exit'):
-        super(_HelpFormatsAction, self).__init__(
+        super().__init__(
             option_strings=option_strings,
             dest=dest,
             default=default,

qubesadmin/tools/qvm_pool_legacy.py

@@ -36,11 +36,11 @@ class _Info(qubesadmin.tools.PoolsAction):
     def __init__(self, option_strings, help='print pool info and exit',
                  **kwargs):
         # pylint: disable=redefined-builtin
-        super(_Info, self).__init__(option_strings, help=help, **kwargs)
+        super().__init__(option_strings, help=help, **kwargs)
 
     def __call__(self, parser, namespace, values, option_string=None):
         setattr(namespace, 'command', 'info')
-        super(_Info, self).__call__(parser, namespace, values, option_string)
+        super().__call__(parser, namespace, values, option_string)
 
 
 def pool_info(pool):
@@ -62,11 +62,11 @@ class _Remove(argparse.Action):
     ''' Action for argument parser that removes a pool '''
 
     def __init__(self, option_strings, dest=None, default=None, metavar=None):
-        super(_Remove, self).__init__(option_strings=option_strings,
-                                      dest=dest,
-                                      metavar=metavar,
-                                      default=default,
-                                      help='remove pool')
+        super().__init__(option_strings=option_strings,
+                         dest=dest,
+                         metavar=metavar,
+                         default=default,
+                         help='remove pool')
 
     def __call__(self, parser, namespace, name, option_string=None):
         setattr(namespace, 'command', 'remove')
@@ -77,12 +77,12 @@ class _Add(argparse.Action):
     ''' Action for argument parser that adds a pool. '''
 
     def __init__(self, option_strings, dest=None, default=None, metavar=None):
-        super(_Add, self).__init__(option_strings=option_strings,
-                                   dest=dest,
-                                   metavar=metavar,
-                                   default=default,
-                                   nargs=2,
-                                   help='add pool')
+        super().__init__(option_strings=option_strings,
+                         dest=dest,
+                         metavar=metavar,
+                         default=default,
+                         nargs=2,
+                         help='add pool')
 
     def __call__(self, parser, namespace, values, option_string=None):
         name, driver = values
@@ -95,23 +95,23 @@ class _Set(qubesadmin.tools.PoolsAction):
     ''' Action for argument parser that sets pool options. '''
 
     def __init__(self, option_strings, dest=None, default=None, metavar=None):
-        super(_Set, self).__init__(option_strings=option_strings,
-                                   dest=dest,
-                                   metavar=metavar,
-                                   default=default,
-                                   help='modify pool (use -o to specify '
-                                        'modifications)')
+        super().__init__(option_strings=option_strings,
+                         dest=dest,
+                         metavar=metavar,
+                         default=default,
+                         help='modify pool (use -o to specify '
+                              'modifications)')
 
     def __call__(self, parser, namespace, name, option_string=None):
         setattr(namespace, 'command', 'set')
-        super(_Set, self).__call__(parser, namespace, name, option_string)
+        super().__call__(parser, namespace, name, option_string)
 
 
 class _Options(argparse.Action):
     ''' Action for argument parser that parsers options. '''
 
     def __init__(self, option_strings, dest, default, metavar='options'):
-        super(_Options, self).__init__(
+        super().__init__(
             option_strings=option_strings,
             dest=dest,
             metavar=metavar,

qubesadmin/tools/qvm_start.py

@@ -42,7 +42,7 @@ class DriveAction(argparse.Action):
             metavar='IMAGE',
             required=False,
             help='Attach drive'):
-        super(DriveAction, self).__init__(option_strings, dest,
+        super().__init__(option_strings, dest,
             metavar=metavar, help=help)
         self.prefix = prefix
 

qubesadmin/vm/__init__.py

@@ -53,7 +53,7 @@ class QubesVM(qubesadmin.base.PropertyHolder):
     firewall = None
 
     def __init__(self, app, name, klass=None, power_state=None):
-        super(QubesVM, self).__init__(app, 'admin.vm.property.', name)
+        super().__init__(app, 'admin.vm.property.', name)
         self._volumes = None
         self._klass = klass
         self._power_state_cache = power_state
@@ -373,7 +373,7 @@ class QubesVM(qubesadmin.base.PropertyHolder):
         # use cached value if available
         if self._klass is None:
             # pylint: disable=no-member
-            self._klass = super(QubesVM, self).klass
+            self._klass = super().klass
         return self._klass
 
 class DispVMWrapper(QubesVM):
@@ -398,7 +398,7 @@ class DispVMWrapper(QubesVM):
                 # Service call may wait for session start, give it more time
                 # than default 5s
                 kwargs['connect_timeout'] = self.qrexec_timeout
-        return super(DispVMWrapper, self).run_service(service, **kwargs)
+        return super().run_service(service, **kwargs)
 
     def cleanup(self):
         '''Cleanup after DispVM usage'''