diff --git a/cura/BuildVolume.py b/cura/BuildVolume.py
index bc8c806699..d8de8efd5a 100755
--- a/cura/BuildVolume.py
+++ b/cura/BuildVolume.py
@@ -26,7 +26,6 @@ catalog = i18nCatalog("cura")
 
 import numpy
 import math
-import copy
 
 from typing import List, Optional, TYPE_CHECKING, Any, Set, cast, Iterable, Dict
 
diff --git a/cura/CuraApplication.py b/cura/CuraApplication.py
index f88467d651..62e11680ce 100755
--- a/cura/CuraApplication.py
+++ b/cura/CuraApplication.py
@@ -1796,7 +1796,7 @@ class CuraApplication(QtApplication):
         try:
             result = workspace_reader.preRead(file_path, show_dialog=False)
             return result == WorkspaceReader.PreReadResult.accepted
-        except Exception as e:
+        except Exception:
             Logger.logException("e", "Could not check file %s", file_url)
             return False
 
diff --git a/cura/Machines/Models/BuildPlateModel.py b/cura/Machines/Models/BuildPlateModel.py
index c52228cf76..3697dd2762 100644
--- a/cura/Machines/Models/BuildPlateModel.py
+++ b/cura/Machines/Models/BuildPlateModel.py
@@ -2,13 +2,8 @@
 # Cura is released under the terms of the LGPLv3 or higher.
 
 from PyQt5.QtCore import Qt
-
-from UM.Application import Application
 from UM.Logger import Logger
 from UM.Qt.ListModel import ListModel
-from UM.Util import parseBool
-
-from cura.Machines.VariantType import VariantType
 
 
 class BuildPlateModel(ListModel):
@@ -26,4 +21,4 @@ class BuildPlateModel(ListModel):
     def _update(self):
         Logger.log("d", "Updating {model_class_name}.".format(model_class_name = self.__class__.__name__))
         self.setItems([])
-        return
\ No newline at end of file
+        return
diff --git a/cura/Machines/Models/DiscoveredPrintersModel.py b/cura/Machines/Models/DiscoveredPrintersModel.py
index a1b68ee1ae..c662334470 100644
--- a/cura/Machines/Models/DiscoveredPrintersModel.py
+++ b/cura/Machines/Models/DiscoveredPrintersModel.py
@@ -11,7 +11,6 @@ from UM.Util import parseBool
 from UM.OutputDevice.OutputDeviceManager import ManualDeviceAdditionAttempt
 
 if TYPE_CHECKING:
-    from PyQt5.QtCore import QObject
     from UM.OutputDevice.OutputDevicePlugin import OutputDevicePlugin
     from cura.CuraApplication import CuraApplication
     from cura.PrinterOutput.NetworkedPrinterOutputDevice import NetworkedPrinterOutputDevice
diff --git a/cura/Machines/VariantNode.py b/cura/Machines/VariantNode.py
index b2115ca099..c9e3ec4913 100644
--- a/cura/Machines/VariantNode.py
+++ b/cura/Machines/VariantNode.py
@@ -1,13 +1,12 @@
 # Copyright (c) 2019 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
-from typing import Optional, TYPE_CHECKING
+from typing import TYPE_CHECKING
 
 from UM.Logger import Logger
 from UM.Settings.ContainerRegistry import ContainerRegistry
 from UM.Settings.Interfaces import ContainerInterface
 from UM.Signal import Signal
 
-from cura.Settings.cura_empty_instance_containers import empty_variant_container
 from cura.Machines.ContainerNode import ContainerNode
 from cura.Machines.MaterialNode import MaterialNode
 
diff --git a/cura/OAuth2/AuthorizationService.py b/cura/OAuth2/AuthorizationService.py
index 68756f8df6..0848623410 100644
--- a/cura/OAuth2/AuthorizationService.py
+++ b/cura/OAuth2/AuthorizationService.py
@@ -3,7 +3,6 @@
 
 import json
 from datetime import datetime, timedelta
-import os
 from typing import Optional, TYPE_CHECKING
 from urllib.parse import urlencode
 
@@ -14,7 +13,6 @@ from PyQt5.QtGui import QDesktopServices
 
 from UM.Logger import Logger
 from UM.Message import Message
-from UM.Platform import Platform
 from UM.Signal import Signal
 
 from cura.OAuth2.LocalAuthorizationServer import LocalAuthorizationServer
diff --git a/cura/Settings/ExtruderManager.py b/cura/Settings/ExtruderManager.py
index b3d108e1aa..62bf396878 100755
--- a/cura/Settings/ExtruderManager.py
+++ b/cura/Settings/ExtruderManager.py
@@ -12,7 +12,6 @@ from UM.Scene.SceneNode import SceneNode
 from UM.Scene.Selection import Selection
 from UM.Scene.Iterator.BreadthFirstIterator import BreadthFirstIterator
 from UM.Settings.ContainerRegistry import ContainerRegistry  # Finding containers by ID.
-from UM.Decorators import deprecated
 
 from typing import Any, cast, Dict, List, Optional, TYPE_CHECKING, Union
 
@@ -369,7 +368,7 @@ class ExtruderManager(QObject):
                 printer = global_stack.getId(), expected = expected_extruder_definition_0_id, got = extruder_stack_0.definition.getId()))
             try:
                 extruder_definition = container_registry.findDefinitionContainers(id = expected_extruder_definition_0_id)[0]
-            except IndexError as e:
+            except IndexError:
                 # It still needs to break, but we want to know what extruder ID made it break.
                 msg = "Unable to find extruder definition with the id [%s]" % expected_extruder_definition_0_id
                 Logger.logException("e", msg)
diff --git a/cura/Settings/IntentManager.py b/cura/Settings/IntentManager.py
index c1d59fb84a..53d41281e8 100644
--- a/cura/Settings/IntentManager.py
+++ b/cura/Settings/IntentManager.py
@@ -1,13 +1,12 @@
-#Copyright (c) 2019 Ultimaker B.V.
-#Cura is released under the terms of the LGPLv3 or higher.
+# Copyright (c) 2019 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
 
 from PyQt5.QtCore import QObject, pyqtProperty, pyqtSignal, pyqtSlot
-from typing import Any, Dict, List, Optional, Set, Tuple, TYPE_CHECKING
+from typing import Any, Dict, List, Set, Tuple, TYPE_CHECKING
 import cura.CuraApplication
 from UM.Logger import Logger
 from cura.Machines.ContainerTree import ContainerTree
 from cura.Settings.cura_empty_instance_containers import empty_intent_container
-from UM.Settings.InstanceContainer import InstanceContainer
 
 if TYPE_CHECKING:
     from UM.Settings.InstanceContainer import InstanceContainer
@@ -116,7 +115,7 @@ class IntentManager(QObject):
     ##  The intent that gets selected by default when no intent is available for
     #   the configuration, an extruder can't match the intent that the user
     #   selects, or just when creating a new printer.
-    def getDefaultIntent(self) -> InstanceContainer:
+    def getDefaultIntent(self) -> "InstanceContainer":
         return empty_intent_container
 
     @pyqtProperty(str, notify = intentCategoryChanged)
diff --git a/plugins/3MFReader/__init__.py b/plugins/3MFReader/__init__.py
index ce94bbe69c..d68338c35f 100644
--- a/plugins/3MFReader/__init__.py
+++ b/plugins/3MFReader/__init__.py
@@ -12,7 +12,6 @@ except ImportError:
 from . import ThreeMFWorkspaceReader
 
 from UM.i18n import i18nCatalog
-from UM.Platform import Platform
 
 catalog = i18nCatalog("cura")
 
diff --git a/plugins/LegacyProfileReader/tests/TestLegacyProfileReader.py b/plugins/LegacyProfileReader/tests/TestLegacyProfileReader.py
index 05f49017a3..c8d38bc177 100644
--- a/plugins/LegacyProfileReader/tests/TestLegacyProfileReader.py
+++ b/plugins/LegacyProfileReader/tests/TestLegacyProfileReader.py
@@ -5,7 +5,6 @@ import configparser # An input for some functions we're testing.
 import os.path # To find the integration test .ini files.
 import pytest # To register tests with.
 import unittest.mock # To mock the application, plug-in and container registry out.
-import os.path
 import sys
 sys.path.append(os.path.join(os.path.dirname(os.path.abspath(__file__)), ".."))
 
diff --git a/plugins/PerObjectSettingsTool/PerObjectSettingVisibilityHandler.py b/plugins/PerObjectSettingsTool/PerObjectSettingVisibilityHandler.py
index 3e1df1c7b8..61d0dbc0f0 100644
--- a/plugins/PerObjectSettingsTool/PerObjectSettingVisibilityHandler.py
+++ b/plugins/PerObjectSettingsTool/PerObjectSettingVisibilityHandler.py
@@ -1,7 +1,7 @@
 # Copyright (c) 2016 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
 
-from PyQt5.QtCore import QObject, pyqtProperty, pyqtSignal
+from PyQt5.QtCore import pyqtProperty
 from UM.FlameProfiler import pyqtSlot
 
 from UM.Application import Application
@@ -13,6 +13,7 @@ import UM.Settings.Models.SettingVisibilityHandler
 from cura.Settings.ExtruderManager import ExtruderManager #To get global-inherits-stack setting values from different extruders.
 from cura.Settings.SettingOverrideDecorator import SettingOverrideDecorator
 
+
 ##  The per object setting visibility handler ensures that only setting
 #   definitions that have a matching instance Container are returned as visible.
 class PerObjectSettingVisibilityHandler(UM.Settings.Models.SettingVisibilityHandler.SettingVisibilityHandler):
diff --git a/plugins/SimulationView/NozzleNode.py b/plugins/SimulationView/NozzleNode.py
index 8a29871775..11b788c128 100644
--- a/plugins/SimulationView/NozzleNode.py
+++ b/plugins/SimulationView/NozzleNode.py
@@ -3,7 +3,6 @@
 
 from UM.Application import Application
 from UM.Math.Color import Color
-from UM.Math.Vector import Vector
 from UM.PluginRegistry import PluginRegistry
 from UM.Scene.SceneNode import SceneNode
 from UM.View.GL.OpenGL import OpenGL
diff --git a/plugins/Toolbox/src/ConfigsModel.py b/plugins/Toolbox/src/ConfigsModel.py
index dd54d53d93..9ba65caaa4 100644
--- a/plugins/Toolbox/src/ConfigsModel.py
+++ b/plugins/Toolbox/src/ConfigsModel.py
@@ -1,11 +1,10 @@
 # Copyright (c) 2018 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
 
-import re
-from typing import Dict
 from PyQt5.QtCore import Qt, pyqtProperty
 from UM.Qt.ListModel import ListModel
 
+
 ##  Model that holds supported configurations (for material/quality packages).
 class ConfigsModel(ListModel):
     def __init__(self, parent = None):
diff --git a/plugins/UM3NetworkPrinting/src/Models/Http/ClusterPrintJobStatus.py b/plugins/UM3NetworkPrinting/src/Models/Http/ClusterPrintJobStatus.py
index e54d99f1e6..9794da1bbb 100644
--- a/plugins/UM3NetworkPrinting/src/Models/Http/ClusterPrintJobStatus.py
+++ b/plugins/UM3NetworkPrinting/src/Models/Http/ClusterPrintJobStatus.py
@@ -2,8 +2,6 @@
 # Cura is released under the terms of the LGPLv3 or higher.
 from typing import List, Optional, Union, Dict, Any
 
-from PyQt5.QtCore import QUrl
-
 from cura.PrinterOutput.Models.PrinterConfigurationModel import PrinterConfigurationModel
 
 from .ClusterBuildPlate import ClusterBuildPlate
diff --git a/plugins/VersionUpgrade/VersionUpgrade21to22/Profile.py b/plugins/VersionUpgrade/VersionUpgrade21to22/Profile.py
index af9635d384..8419b3beeb 100644
--- a/plugins/VersionUpgrade/VersionUpgrade21to22/Profile.py
+++ b/plugins/VersionUpgrade/VersionUpgrade21to22/Profile.py
@@ -6,7 +6,7 @@ import io #To write config files to strings as if they were files.
 from typing import Dict, List, Optional, Tuple
 
 import UM.VersionUpgrade
-from UM.Logger import Logger
+
 
 ##  Creates a new profile instance by parsing a serialised profile in version 1
 #   of the file format.
@@ -20,6 +20,7 @@ def importFrom(serialised: str, filename: str) -> Optional["Profile"]:
     except (configparser.Error, UM.VersionUpgrade.FormatException, UM.VersionUpgrade.InvalidVersionException):
         return None
 
+
 ##  A representation of a profile used as intermediary form for conversion from
 #   one format to the other.
 class Profile:
diff --git a/tests/API/TestAccount.py b/tests/API/TestAccount.py
index fd3d5aea55..d2708638cb 100644
--- a/tests/API/TestAccount.py
+++ b/tests/API/TestAccount.py
@@ -1,9 +1,8 @@
-from unittest.mock import MagicMock, patch, PropertyMock
+from unittest.mock import MagicMock
 
 import pytest
 
-from cura.API import CuraAPI, Account
-from cura.OAuth2.AuthorizationService import AuthorizationService
+from cura.API import Account
 from cura.OAuth2.Models import UserProfile