diff --git a/app/blueprints/api/tokens.py b/app/blueprints/api/tokens.py
index 28df7b6d..62976109 100644
--- a/app/blueprints/api/tokens.py
+++ b/app/blueprints/api/tokens.py
@@ -20,10 +20,10 @@ from flask_babel import lazy_gettext
 from flask_login import login_required, current_user
 from flask_wtf import FlaskForm
 from wtforms import *
-from wtforms_sqlalchemy.fields import QuerySelectField
 from wtforms.validators import *
+from wtforms_sqlalchemy.fields import QuerySelectField
 
-from app.models import db, User, APIToken, Package, Permission
+from app.models import db, User, APIToken, Permission
 from app.utils import randomString
 from . import bp
 from ..users.settings import get_setting_tabs
@@ -137,8 +137,6 @@ def delete_token(username, id):
 	if not user.check_perm(current_user, Permission.CREATE_TOKEN):
 		abort(403)
 
-	is_new = id is None
-
 	token = APIToken.query.get(id)
 	if token is None:
 		abort(404)
diff --git a/app/blueprints/github/__init__.py b/app/blueprints/github/__init__.py
index 4f657eba..ef52d9de 100644
--- a/app/blueprints/github/__init__.py
+++ b/app/blueprints/github/__init__.py
@@ -38,10 +38,10 @@ def view_permissions():
 			current_app.config["GITHUB_CLIENT_ID"]
 	return redirect(url)
 
+
 @bp.route("/github/callback/")
 @github.authorized_handler
 def callback(oauth_token):
-	next_url = request.args.get("next")
 	if oauth_token is None:
 		flash(gettext("Authorization failed [err=gh-oauth-login-failed]"), "danger")
 		return redirect(url_for("users.login"))
diff --git a/app/blueprints/packages/packages.py b/app/blueprints/packages/packages.py
index 9aeb676d..e2c2911e 100644
--- a/app/blueprints/packages/packages.py
+++ b/app/blueprints/packages/packages.py
@@ -13,29 +13,29 @@
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
-import typing
+
 from urllib.parse import quote as urlescape
 
-from flask import render_template, make_response
 from celery import uuid
-from flask_wtf import FlaskForm
+from flask import render_template, make_response
 from flask_login import login_required
+from flask_wtf import FlaskForm
 from jinja2.utils import markupsafe
 from sqlalchemy import func
 from sqlalchemy.orm import joinedload, subqueryload
 from wtforms import *
-from wtforms_sqlalchemy.fields import QuerySelectField, QuerySelectMultipleField
 from wtforms.validators import *
+from wtforms_sqlalchemy.fields import QuerySelectField, QuerySelectMultipleField
 
-from app.querybuilder import QueryBuilder
-from app.rediscache import has_key, set_key
-from app.tasks.importtasks import importRepoScreenshot, checkZipRelease
-from app.utils import *
-from . import bp, get_package_tabs
 from app.logic.LogicError import LogicError
 from app.logic.packages import do_edit_package
 from app.models.packages import PackageProvides
+from app.querybuilder import QueryBuilder
+from app.rediscache import has_key, set_key
+from app.tasks.importtasks import importRepoScreenshot, checkZipRelease
 from app.tasks.webhooktasks import post_discord_webhook
+from app.utils import *
+from . import bp, get_package_tabs
 from ...logic.game_support import GameSupportResolver
 
 
@@ -253,7 +253,7 @@ class PackageForm(FlaskForm):
 
 	submit           = SubmitField(lazy_gettext("Save"))
 
-	def validate_name(form, field):
+	def validate_name(self, field):
 		if field.data == "_game":
 			raise ValidationError(lazy_gettext("_game is not an allowed name"))
 
diff --git a/app/blueprints/threads/__init__.py b/app/blueprints/threads/__init__.py
index 6ca13b53..502e860a 100644
--- a/app/blueprints/threads/__init__.py
+++ b/app/blueprints/threads/__init__.py
@@ -101,7 +101,6 @@ def set_lock(id):
 	if thread.locked is None:
 		abort(400)
 
-	msg = None
 	if thread.locked:
 		msg = "Locked thread '{}'".format(thread.title)
 		flash(gettext("Locked thread"), "success")
diff --git a/app/blueprints/users/account.py b/app/blueprints/users/account.py
index b58bbd27..566347ac 100644
--- a/app/blueprints/users/account.py
+++ b/app/blueprints/users/account.py
@@ -17,7 +17,7 @@
 
 
 from flask import *
-from flask_babel import gettext, lazy_gettext, get_locale
+from flask_babel import gettext, get_locale
 from flask_login import current_user, login_required, logout_user, login_user
 from flask_wtf import FlaskForm
 from sqlalchemy import or_
@@ -28,8 +28,6 @@ from app.models import *
 from app.tasks.emails import send_verify_email, send_anon_email, send_unsubscribe_verify, send_user_email
 from app.utils import randomString, make_flask_login_password, is_safe_url, check_password_hash, addAuditLog, \
 	nonEmptyOrNone, post_login, is_username_valid
-from passlib.pwd import genphrase
-
 from . import bp
 
 
diff --git a/app/blueprints/users/claim.py b/app/blueprints/users/claim.py
index da20cb8f..6949a282 100644
--- a/app/blueprints/users/claim.py
+++ b/app/blueprints/users/claim.py
@@ -73,7 +73,6 @@ def claim_forums():
 				return redirect(url_for("users.claim_forums"))
 
 			# Get signature
-			sig = None
 			try:
 				profile = getProfile("https://forum.minetest.net", username)
 				sig = profile.signature if profile else None
diff --git a/app/blueprints/users/settings.py b/app/blueprints/users/settings.py
index b22f8608..aec179eb 100644
--- a/app/blueprints/users/settings.py
+++ b/app/blueprints/users/settings.py
@@ -1,5 +1,5 @@
 from flask import *
-from flask_babel import gettext, lazy_gettext, get_locale
+from flask_babel import gettext, get_locale
 from flask_login import current_user, login_required, logout_user
 from flask_wtf import FlaskForm
 from sqlalchemy import or_
@@ -7,8 +7,8 @@ from wtforms import *
 from wtforms.validators import *
 
 from app.models import *
-from app.utils import nonEmptyOrNone, addAuditLog, randomString, rank_required, has_blocked_domains
 from app.tasks.emails import send_verify_email
+from app.utils import nonEmptyOrNone, addAuditLog, randomString, rank_required, has_blocked_domains
 from . import bp
 
 
diff --git a/app/default_data.py b/app/default_data.py
index 7db893e0..c5f12abe 100644
--- a/app/default_data.py
+++ b/app/default_data.py
@@ -52,7 +52,6 @@ def populate_test_data(session):
 	tags = { x.name : x for x in Tag.query.all() }
 	admin_user = User.query.filter_by(rank=UserRank.ADMIN).first()
 	v4 = MinetestRelease.query.filter_by(protocol=32).first()
-	v50 = MinetestRelease.query.filter_by(protocol=37).first()
 	v51 = MinetestRelease.query.filter_by(protocol=38).first()
 
 	ez = User("Shara")
@@ -381,7 +380,6 @@ Uses the CTF PvP Engine.
 
 	metas = {}
 	for package in Package.query.filter_by(type=PackageType.MOD).all():
-		meta = None
 		try:
 			meta = metas[package.name]
 		except KeyError:
diff --git a/app/logic/graphs.py b/app/logic/graphs.py
index 3d44b87b..d5bcacba 100644
--- a/app/logic/graphs.py
+++ b/app/logic/graphs.py
@@ -134,7 +134,7 @@ def get_package_overview_for_user(user: Optional[User], start_date: datetime.dat
 	return result
 
 
-def get_all_package_stats(start_date: Optional[datetime.date], end_date: Optional[datetime.date]):
+def get_all_package_stats(start_date: Optional[datetime.date] = None, end_date: Optional[datetime.date] = None):
 	now_date = datetime.datetime.utcnow().date()
 	if end_date is None or end_date > now_date:
 		end_date = now_date
diff --git a/app/logic/packages.py b/app/logic/packages.py
index 30928418..6e245048 100644
--- a/app/logic/packages.py
+++ b/app/logic/packages.py
@@ -16,8 +16,10 @@
 
 import json
 import re
+import typing
+
 import validators
-from flask_babel import lazy_gettext
+from flask_babel import lazy_gettext, LazyString
 
 from app.logic.LogicError import LogicError
 from app.models import User, Package, PackageType, MetaPackage, Tag, ContentWarning, db, Permission, AuditSeverity, \
@@ -26,7 +28,7 @@ from app.utils import addAuditLog, has_blocked_domains, diff_dictionaries, descr
 from app.utils.url import clean_youtube_url
 
 
-def check(cond: bool, msg: str):
+def check(cond: bool, msg: typing.Union[str, LazyString]):
 	if not cond:
 		raise LogicError(400, msg)
 
diff --git a/app/logic/screenshots.py b/app/logic/screenshots.py
index 8560055e..869255c6 100644
--- a/app/logic/screenshots.py
+++ b/app/logic/screenshots.py
@@ -64,9 +64,9 @@ def do_order_screenshots(_user: User, package: Package, order: [any]):
 		try:
 			lookup[int(ss_id)].order = counter
 			counter += 1
-		except KeyError as e:
+		except KeyError:
 			raise LogicError(400, "Unable to find screenshot with id={}".format(ss_id))
-		except (ValueError, TypeError) as e:
+		except (ValueError, TypeError):
 			raise LogicError(400, "Invalid id, not a number: {}".format(json.dumps(ss_id)))
 
 	db.session.commit()
@@ -75,7 +75,7 @@ def do_order_screenshots(_user: User, package: Package, order: [any]):
 def do_set_cover_image(_user: User, package: Package, cover_image):
 	try:
 		cover_image = int(cover_image)
-	except (ValueError, TypeError) as e:
+	except (ValueError, TypeError):
 		raise LogicError(400, "Invalid id, not a number: {}".format(json.dumps(cover_image)))
 
 	for screenshot in package.screenshots.all():
diff --git a/app/models/packages.py b/app/models/packages.py
index 213f83c9..b6bfc686 100644
--- a/app/models/packages.py
+++ b/app/models/packages.py
@@ -214,30 +214,6 @@ PACKAGE_STATE_FLOW = {
 }
 
 
-class PackagePropertyKey(enum.Enum):
-	name          = "Name"
-	title         = "Title"
-	short_desc     = "Short Description"
-	desc          = "Description"
-	type          = "Type"
-	license       = "License"
-	media_license = "Media License"
-	tags          = "Tags"
-	provides      = "Provides"
-	repo          = "Repository"
-	website       = "Website"
-	issueTracker  = "Issue Tracker"
-	forums        = "Forum Topic ID"
-
-	def convert(self, value):
-		if self == PackagePropertyKey.tags:
-			return ",".join([t.title for t in value])
-		elif self == PackagePropertyKey.provides:
-			return ",".join([t.name for t in value])
-		else:
-			return str(value)
-
-
 PackageProvides = db.Table("provides",
 	db.Column("package_id",    db.Integer, db.ForeignKey("package.id"), primary_key=True),
 	db.Column("metapackage_id", db.Integer, db.ForeignKey("meta_package.id"), primary_key=True)
@@ -491,9 +467,6 @@ class Package(db.Model):
 
 		self.maintainers.append(self.author)
 
-		for e in PackagePropertyKey:
-			setattr(self, e.name, getattr(package, e.name))
-
 	@classmethod
 	def get_by_key(cls, key):
 		parts = key.split("/")
diff --git a/app/querybuilder.py b/app/querybuilder.py
index 5658ce62..59d5bc15 100644
--- a/app/querybuilder.py
+++ b/app/querybuilder.py
@@ -40,7 +40,6 @@ class QueryBuilder:
 			self.random or self.lucky or self.author or self.version or self.game)
 
 	def __init__(self, args):
-		title = "Packages"
 
 		# Get request types
 		types = args.getlist("type")
diff --git a/app/tasks/__init__.py b/app/tasks/__init__.py
index c80fd349..5e419430 100644
--- a/app/tasks/__init__.py
+++ b/app/tasks/__init__.py
@@ -28,9 +28,13 @@ class TaskError(Exception):
 	def __str__(self):
 		return repr("TaskError: " + self.value)
 
+
 class FlaskCelery(Celery):
+	app: flask.app
+
 	def __init__(self, *args, **kwargs):
 		super(FlaskCelery, self).__init__(*args, **kwargs)
+		self.app = None
 		self.patch_task()
 
 		if 'app' in kwargs:
@@ -56,6 +60,7 @@ class FlaskCelery(Celery):
 		self.app = app
 		self.config_from_object(app.config)
 
+
 def make_celery(app):
 	celery = FlaskCelery(app.import_name, backend=app.config['CELERY_RESULT_BACKEND'],
 					broker=app.config['CELERY_BROKER_URL'])
@@ -63,8 +68,10 @@ def make_celery(app):
 	celery.init_app(app)
 	return celery
 
+
 celery = make_celery(app)
 
+
 CELERYBEAT_SCHEDULE = {
 	'topic_list_import': {
 		'task': 'app.tasks.forumtasks.importTopicList',
@@ -97,6 +104,7 @@ CELERYBEAT_SCHEDULE = {
 }
 celery.conf.beat_schedule = CELERYBEAT_SCHEDULE
 
+
 from . import importtasks, forumtasks, emails, pkgtasks, usertasks
 
 
diff --git a/app/tasks/emails.py b/app/tasks/emails.py
index 7972b847..ca146e2e 100644
--- a/app/tasks/emails.py
+++ b/app/tasks/emails.py
@@ -14,10 +14,11 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+import typing
 from typing import Dict
 
 from flask import render_template, escape
-from flask_babel import force_locale, gettext, lazy_gettext
+from flask_babel import force_locale, gettext, lazy_gettext, LazyString
 from flask_mail import Message
 from app import mail
 from app.models import Notification, db, EmailSubscription, User
@@ -90,7 +91,8 @@ def send_unsubscribe_verify(email, locale):
 
 
 @celery.task(rate_limit="25/m")
-def send_email_with_reason(email: str, locale: str, subject: str, text: str, html: str, reason: str, conn: any):
+def send_email_with_reason(email: str, locale: str, subject: str, text: str, html: str,
+		reason: typing.Union[str, LazyString], conn: any):
 	sub = get_email_subscription(email)
 	if sub.blacklisted:
 		return
diff --git a/app/template_filters.py b/app/template_filters.py
index 28ad4275..c1b13065 100644
--- a/app/template_filters.py
+++ b/app/template_filters.py
@@ -1,16 +1,15 @@
-import jinja2.nodes
+from datetime import datetime as dt
+from urllib.parse import urlparse
+
+from flask_babel import format_timedelta, gettext
+from flask_login import current_user
 from markupsafe import Markup
 
 from . import app, utils
+from .markdown import get_headings
 from .models import Permission, Package, PackageState, PackageRelease
 from .utils import abs_url_for, url_set_query, url_set_anchor, url_current
 from .utils.minetest_hypertext import normalize_whitespace as do_normalize_whitespace
-from .markdown import get_headings
-
-from flask_login import current_user
-from flask_babel import format_timedelta, gettext
-from urllib.parse import urlparse
-from datetime import datetime as dt
 
 
 @app.context_processor
diff --git a/app/utils/flask.py b/app/utils/flask.py
index 0a4a4bd9..2651ecd8 100644
--- a/app/utils/flask.py
+++ b/app/utils/flask.py
@@ -14,9 +14,9 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+import typing
 from urllib.parse import urljoin, urlparse, urlunparse
 
-import typing
 import user_agents
 from flask import request, abort
 from flask_babel import LazyString
diff --git a/app/utils/git.py b/app/utils/git.py
index e1363245..9475ce85 100644
--- a/app/utils/git.py
+++ b/app/utils/git.py
@@ -47,7 +47,6 @@ def get_temp_dir():
 def clone_repo(urlstr, ref=None, recursive=False):
 	gitDir = os.path.join(tempfile.gettempdir(), randomString(10))
 
-	err = None
 	try:
 		gitUrl = generate_git_url(urlstr)
 		print("Cloning from " + gitUrl)
diff --git a/app/utils/models.py b/app/utils/models.py
index d7d54647..c93654f0 100644
--- a/app/utils/models.py
+++ b/app/utils/models.py
@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-
+import typing
 from functools import wraps
 from typing import List
 
@@ -87,7 +87,8 @@ def addNotification(target, causer: User, type: NotificationType, title: str, ur
 		db.session.add(notif)
 
 
-def addAuditLog(severity: AuditSeverity, causer: User, title: str, url: str, package : Package =None, description : str =None):
+def addAuditLog(severity: AuditSeverity, causer: User, title: str, url: typing.Optional[str],
+		package: Package = None, description: str = None):
 	entry = AuditLogEntry(causer, severity, title, url, package, description)
 	db.session.add(entry)