Fix pylint issues

.pylintrc

@@ -6,7 +6,7 @@ disable = missing-docstring, too-few-public-methods, invalid-name
 
 [SIMILARITIES]
 
-min-similarity-lines=7
+min-similarity-lines=8
 ignore-comments=yes
 ignore-docstrings=yes
 ignore-imports=yes

tfw/components/ide/deploy_handler.py

@@ -7,6 +7,7 @@ class DeployHandler:
     keys = ['deploy.start', 'process.restart']
 
     def __init__(self, process_name='webservice'):
+        self.connector = None
         self.process_name = process_name
 
         self.commands = {
@@ -20,7 +21,7 @@ class DeployHandler:
         except KeyError:
             LOG.error('IGNORING MESSAGE: Invalid message received: %s', message)
 
-    def handle_deploy(self, message):
+    def handle_deploy(self, _):
         self.connector.send_message({
             'key': 'process.restart',
             'name': self.process_name

tfw/components/pipe_io/pipe_connector/pipe_connector.py

@@ -2,7 +2,7 @@ from stat import S_ISFIFO
 from os import access, mkdir, stat, R_OK
 from os.path import exists
 
-from pipe_io_server import PipeReaderServer, PipeWriterServer
+from pipe_io_server import PipeWriterServer
 
 from tfw.internals.inotify import InotifyObserver, InotifyFileCreatedEvent, InotifyFileDeletedEvent
 

tfw/components/pipe_io/pipe_connector/test_proxy_pipe_connector.py

@@ -8,9 +8,8 @@ from os.path import join
 from pathlib import Path
 from tempfile import TemporaryDirectory
 
-from tfw.internals.inotify import InotifyFileCreatedEvent, InotifyFileDeletedEvent
-
 import pytest
+from tfw.internals.inotify import InotifyFileCreatedEvent, InotifyFileDeletedEvent
 
 from .pipe_connector import PipeConnector
 from .proxy_pipe_connector_handler import ProxyPipeConnector

tfw/event_handlers.py

@@ -1,2 +1,8 @@
 # pylint: disable=unused-import
-from tfw.internals.event_handling import EventHandler, ControlEventHandler, FSMAwareEventHandler, SignedEventHandler, SignedControlEventHandler
+from tfw.internals.event_handling import (
+    EventHandler,
+    ControlEventHandler,
+    FSMAwareEventHandler,
+    SignedEventHandler,
+    SignedControlEventHandler
+)

tfw/internals/event_handling/event_handler.py

@@ -13,6 +13,7 @@ class EventHandler:
             self.handle_event(message, self.connector)
 
     def _validate_message(self, message):
+        # pylint: disable=unused-argument,no-self-use
         return True
 
     def handle_event(self, message, connector):

tfw/internals/event_handling/signed_control_event_handler.py

@@ -2,6 +2,7 @@ from .control_event_handler import ControlEventHandler
 from .signed_event_handler import SignedEventHandler
 
 class SignedControlEventHandler(ControlEventHandler, SignedEventHandler):
+    # pylint: disable=abstract-method
     def _validate_message(self, message):
         return (
             ControlEventHandler._validate_message(self, message) and