update flake8 and flake8-deprecated

Updated requirements and adjusted the configuration in `.flake8`; other
files have been modified where the lack of per-file auto-ignore caused
problems, where putty's `# flake8: disable=` syntax could be replaced
with a simpler `noqa`, or where pylint directives already suppressed the
same error.

.flake8

@@ -33,18 +33,12 @@ ignore =
     D102,D103,D104,D105,D209,D211,D402,D403
 min-version = 3.4.0
 max-complexity = 12
-putty-auto-ignore = True
-putty-ignore =
-    /# pylint: disable=invalid-name/ : +N801,N806
-    /# pragma: no mccabe/ : +C901
-    tests/*/test_*.py : +D100,D101,D401
-    tests/conftest.py : +F403
-    tests/unit/browser/test_history.py : +N806
-    tests/helpers/fixtures.py : +N806
-    tests/unit/browser/webkit/http/test_content_disposition.py : +D400
-    scripts/dev/ci/appveyor_install.py : +FI53
-    # FIXME:conf
-    tests/unit/completion/test_models.py : +F821
+per-file-ignores =
+    tests/*/test_*.py : D100,D101,D401
+    tests/unit/browser/test_history.py : N806
+    tests/helpers/fixtures.py : N806
+    tests/unit/browser/webkit/http/test_content_disposition.py : D400
+    scripts/dev/ci/appveyor_install.py : FI53
 copyright-check = True
 copyright-regexp = # Copyright [\d-]+ .*
 copyright-min-file-size = 110

misc/requirements/requirements-flake8.txt

@@ -1,23 +1,21 @@
 # This file is automatically generated by scripts/dev/recompile_requirements.py
 
-flake8==2.6.2  # rq.filter: < 3.0.0
+flake8==3.5.0
 flake8-copyright==0.2.0
 flake8-debugger==3.0.0
-flake8-deprecated==1.2.1  # rq.filter: < 1.3
+flake8-deprecated==1.3
 flake8-docstrings==1.0.3  # rq.filter: < 1.1.0
 flake8-future-import==0.4.3
 flake8-mock==0.3
 flake8-pep3101==1.0  # rq.filter: < 1.1
+flake8-per-file-ignores==0.4
 flake8-polyfill==1.0.1
-flake8-putty==0.4.0
 flake8-string-format==0.2.3
 flake8-tidy-imports==1.1.0
 flake8-tuple==0.2.13
 mccabe==0.6.1
-packaging==16.8
 pep8-naming==0.4.1
 pycodestyle==2.3.1
 pydocstyle==1.1.1  # rq.filter: < 2.0.0
 pyflakes==1.6.0
-pyparsing==2.2.0
 six==1.11.0

misc/requirements/requirements-flake8.txt-raw

@@ -1,12 +1,12 @@
-flake8<3.0.0
+flake8
 flake8-copyright
 flake8-debugger
-flake8-deprecated<1.3
+flake8-deprecated
 flake8-docstrings<1.1.0
 flake8-future-import
 flake8-mock
 flake8-pep3101<1.1
-flake8-putty
+flake8-per-file-ignores
 flake8-string-format
 flake8-tidy-imports
 flake8-tuple
@@ -14,14 +14,7 @@ pep8-naming
 pydocstyle<2.0.0
 pyflakes
 
-# Pinned to 2.0.0 otherwise
-pycodestyle==2.3.1
-# Pinned to 0.5.3 otherwise
-mccabe==0.6.1
-
 # Waiting until flake8-putty updated
-#@ filter: flake8 < 3.0.0
 #@ filter: pydocstyle < 2.0.0
 #@ filter: flake8-docstrings < 1.1.0
 #@ filter: flake8-pep3101 < 1.1
-#@ filter: flake8-deprecated < 1.3

qutebrowser/browser/qutescheme.py

@@ -91,7 +91,7 @@ class Redirect(Exception):
         self.url = url
 
 
-class add_handler:  # pylint: disable=invalid-name
+class add_handler:  # noqa: N801,N806 pylint: disable=invalid-name
 
     """Decorator to register a qute://* URL handler.
 

qutebrowser/browser/webkit/network/networkmanager.py

@@ -206,7 +206,7 @@ class NetworkManager(QNetworkAccessManager):
 
     # No @pyqtSlot here, see
     # https://github.com/qutebrowser/qutebrowser/issues/2213
-    def on_ssl_errors(self, reply, errors):  # pragma: no mccabe
+    def on_ssl_errors(self, reply, errors):  # noqa: C901 pragma: no mccabe
         """Decide if SSL errors should be ignored or not.
 
         This slot is called on SSL/TLS errors by the self.sslErrors signal.

qutebrowser/browser/webkit/network/networkreply.py

@@ -34,7 +34,7 @@ class FixedDataNetworkReply(QNetworkReply):
 
     """QNetworkReply subclass for fixed data."""
 
-    def __init__(self, request, fileData, mimeType,  # flake8: disable=N803
+    def __init__(self, request, fileData, mimeType,  # noqa: N803
                  parent=None):
         """Constructor.
 

qutebrowser/commands/cmdutils.py

@@ -61,7 +61,7 @@ def check_exclusive(flags, names):
             argstr))
 
 
-class register:  # pylint: disable=invalid-name
+class register:  # noqa: N801,N806 pylint: disable=invalid-name
 
     """Decorator to register a new command handler.
 
@@ -114,7 +114,7 @@ class register:  # pylint: disable=invalid-name
         return func
 
 
-class argument:  # pylint: disable=invalid-name
+class argument:  # noqa: N801,N806 pylint: disable=invalid-name
 
     """Decorator to customize an argument for @cmdutils.register.
 

qutebrowser/commands/command.py

@@ -393,7 +393,7 @@ class Command:
         if isinstance(typ, tuple):
             raise TypeError("{}: Legacy tuple type annotation!".format(
                 self.name))
-        elif type(typ) is type(typing.Union):  # flake8: disable=E721
+        elif type(typ) is type(typing.Union):  # noqa: E721
             # this is... slightly evil, I know
             # We also can't use isinstance here because typing.Union doesn't
             # support that.

qutebrowser/config/config.py

@@ -38,7 +38,7 @@ key_instance = None
 change_filters = []
 
 
-class change_filter:  # pylint: disable=invalid-name
+class change_filter:  # noqa: N801,N806 pylint: disable=invalid-name
 
     """Decorator to filter calls based on a config section/option matching.
 

qutebrowser/keyinput/modeman.py

@@ -62,7 +62,7 @@ class NotInModeError(Exception):
 
 def init(win_id, parent):
     """Initialize the mode manager and the keyparsers for the given win_id."""
-    KM = usertypes.KeyMode  # pylint: disable=invalid-name
+    KM = usertypes.KeyMode  # noqa: N801,N806 pylint: disable=invalid-name
     modeman = ModeManager(win_id, parent)
     objreg.register('mode-manager', modeman, scope='window', window=win_id)
     keyparsers = {

qutebrowser/mainwindow/statusbar/bar.py

@@ -113,7 +113,7 @@ def _generate_stylesheet():
                 color: {{ conf.colors.%s }};
                 background-color: {{ conf.colors.%s }};
             }
-        """ % (flag, flag, flag,  # flake8: disable=S001
+        """ % (flag, flag, flag,  # noqa: S001
                option + '.fg', option + '.bg')
     return stylesheet
 

qutebrowser/misc/crashsignal.py

@@ -22,7 +22,7 @@
 import os
 import sys
 import bdb
-import pdb  # flake8: disable=T002
+import pdb  # noqa: T002
 import signal
 import functools
 import faulthandler

qutebrowser/misc/split.py

@@ -55,7 +55,7 @@ class ShellLexer:
         self.token = ''
         self.state = ' '
 
-    def __iter__(self):  # pragma: no mccabe
+    def __iter__(self):  # noqa: C901 pragma: no mccabe
         """Read a raw token from the input stream."""
         self.reset()
         for nextchar in self.string:

qutebrowser/utils/debug.py

@@ -232,7 +232,7 @@ def format_call(func, args=None, kwargs=None, full=True):
     return '{}({})'.format(name, format_args(args, kwargs))
 
 
-class log_time:  # pylint: disable=invalid-name
+class log_time:  # noqa: N801,N806 pylint: disable=invalid-name
 
     """Log the time an operation takes.
 

qutebrowser/utils/log.py

@@ -360,7 +360,7 @@ def qt_message_handler(msg_type, context, msg):
         # PNGs in Qt with broken color profile
         # https://bugreports.qt.io/browse/QTBUG-39788
         'libpng warning: iCCP: Not recognizing known sRGB profile that has '
-            'been edited',  # flake8: disable=E131
+            'been edited',  # noqa: E131
         'libpng warning: iCCP: known incorrect sRGB profile',
         # Hopefully harmless warning
         'OpenType support missing for script ',
@@ -419,7 +419,7 @@ def qt_message_handler(msg_type, context, msg):
             'libpng warning: iCCP: known incorrect sRGB profile',
             # https://bugreports.qt.io/browse/QTBUG-47154
             'virtual void QSslSocketBackendPrivate::transmit() SSLRead failed '
-                'with: -9805',  # flake8: disable=E131
+                'with: -9805',  # noqa: E131
         ]
 
     if any(msg.strip().startswith(pattern) for pattern in suppressed_msgs):

qutebrowser/utils/utils.py

@@ -584,7 +584,7 @@ def disabled_excepthook():
             sys.excepthook = old_excepthook
 
 
-class prevent_exceptions:  # pylint: disable=invalid-name
+class prevent_exceptions:  # noqa: N801,N806 pylint: disable=invalid-name
 
     """Decorator to ignore and log exceptions.
 

tests/conftest.py

@@ -35,7 +35,7 @@ pytest.register_assert_rewrite('helpers')
 from helpers import logfail
 from helpers.logfail import fail_on_logging
 from helpers.messagemock import message_mock
-from helpers.fixtures import *
+from helpers.fixtures import *  # noqa: F403
 from qutebrowser.utils import qtutils, standarddir, usertypes, utils
 from qutebrowser.misc import objects
 

tests/helpers/fixtures.py

@@ -17,7 +17,7 @@
 # You should have received a copy of the GNU General Public License
 # along with qutebrowser.  If not, see <http://www.gnu.org/licenses/>.
 
-# pylint: disable=invalid-name
+# noqa: N801,N806 pylint: disable=invalid-name
 
 """pytest fixtures used by the whole testsuite.
 

tests/helpers/stubs.py

@@ -17,7 +17,7 @@
 # You should have received a copy of the GNU General Public License
 # along with qutebrowser.  If not, see <http://www.gnu.org/licenses/>.
 
-# pylint: disable=invalid-name,abstract-method
+# noqa: N801,N806 pylint: disable=invalid-name,abstract-method
 
 """Fake objects/stubs."""
 

tests/unit/commands/test_cmdutils.py

@@ -103,7 +103,7 @@ class TestRegister:
     def test_lowercasing(self):
         """Make sure the function name is normalized correctly (uppercase)."""
         @cmdutils.register()
-        def Test():  # pylint: disable=invalid-name
+        def Test():  # noqa: N801,N806 pylint: disable=invalid-name
             """Blah."""
             pass
 

tests/unit/config/test_config.py

@@ -591,7 +591,7 @@ class StyleObj(QObject):
     def __init__(self, stylesheet=None, parent=None):
         super().__init__(parent)
         if stylesheet is not None:
-            self.STYLESHEET = stylesheet  # pylint: disable=invalid-name
+            self.STYLESHEET = stylesheet  # noqa: N801,N806 pylint: disable=invalid-name
         self.rendered_stylesheet = None
 
     def setStyleSheet(self, stylesheet):

tests/unit/utils/test_debug.py

@@ -252,8 +252,8 @@ class TestGetAllObjects:
 
         root = QObject()
         o1 = self.Object('Object 1', root)
-        o2 = self.Object('Object 2', o1)  # flake8: disable=F841
-        o3 = self.Object('Object 3', root)  # flake8: disable=F841
+        o2 = self.Object('Object 2', o1)  # noqa: F841
+        o3 = self.Object('Object 3', root)  # noqa: F841
 
         expected = textwrap.dedent("""
             Qt widgets - 2 objects: