diff --git a/files/classes/badges.py b/files/classes/badges.py
index 841661616..cce94627d 100644
--- a/files/classes/badges.py
+++ b/files/classes/badges.py
@@ -74,7 +74,7 @@ class Badge(Base):
 	def text(self):
 		if self.until:
 			text = self.badge.description + " until"
-		elif self.badge_id in (28, 170, 179):
+		elif self.badge_id in {28, 170, 179}:
 			text = self.badge.description + " permanently"
 		elif self.description:
 			text = self.description
diff --git a/files/classes/comment.py b/files/classes/comment.py
index e727c1810..f176955cb 100644
--- a/files/classes/comment.py
+++ b/files/classes/comment.py
@@ -284,7 +284,7 @@ class Comment(Base):
 
 			if v:
 				sub = self.post.sub
-				if sub in ('furry','vampire','racist','femboy') and not v.house.lower().startswith(sub): body += ' disabled '
+				if sub in {'furry','vampire','racist','femboy'} and not v.house.lower().startswith(sub): body += ' disabled '
 				body += f''' onchange="poll_vote_{o.exclusive}('{o.id}', '{self.id}', 'comment')"'''
 			else:
 				body += f''' onchange="poll_vote_no_v()"'''
diff --git a/files/classes/submission.py b/files/classes/submission.py
index 8f6ae788a..3b5724f31 100644
--- a/files/classes/submission.py
+++ b/files/classes/submission.py
@@ -221,7 +221,7 @@ class Submission(Base):
 		if v and v.poor:
 			return 0
 		elif self.distinguish_level:
-			if SITE_NAME == 'rDrama' and kind in ('glowie', 'tilt',):
+			if SITE_NAME == 'rDrama' and kind in {'glowie', 'tilt',}:
 				return 0
 			elif SITE_NAME == 'WPD':
 				return 0
@@ -306,7 +306,7 @@ class Submission(Base):
 
 				if v:
 					sub = self.sub
-					if sub in ('furry','vampire','racist','femboy') and not v.house.lower().startswith(sub): body += ' disabled '
+					if sub in {'furry','vampire','racist','femboy'} and not v.house.lower().startswith(sub): body += ' disabled '
 					body += f''' onchange="poll_vote_{o.exclusive}('{o.id}', '{self.id}', 'post')"'''
 				else:
 					body += f''' onchange="poll_vote_no_v()"'''
diff --git a/files/classes/user.py b/files/classes/user.py
index 95dd992cd..e7bb9f8ac 100644
--- a/files/classes/user.py
+++ b/files/classes/user.py
@@ -318,7 +318,7 @@ class User(Base):
 	@lazy
 	def mods(self, sub):
 		if self.is_suspended_permanently or self.shadowbanned: return False
-		if self.id in (AEVANN_ID, SNAKES_ID): return True
+		if self.id in {AEVANN_ID, SNAKES_ID}: return True
 		try:
 			return any(map(lambda x: x.sub == sub, self.sub_mods))
 		except:
@@ -970,7 +970,7 @@ class User(Base):
 					if other.sentto != user.id: return user.admin_level >= PERMS['POST_COMMENT_MODERATION']  # type: ignore
 		elif isinstance(other, Sub):
 			if other.name == 'chudrama': return bool(user) and user.can_see_chudrama
-			if other.name in ('countryclub','splash_mountain'): return bool(user) and user.can_see_countryclub
+			if other.name in {'countryclub','splash_mountain'}: return bool(user) and user.can_see_countryclub
 			if other.name == 'masterbaiters': return bool(user) and user.can_see_masterbaiters
 		elif isinstance(other, User):
 			return (user and user.id == other.id) or (user and user.can_see_shadowbanned) or not other.shadowbanned
diff --git a/files/helpers/actions.py b/files/helpers/actions.py
index dd5b124d7..f80ccac3b 100644
--- a/files/helpers/actions.py
+++ b/files/helpers/actions.py
@@ -389,7 +389,7 @@ def execute_blackjack(v, target, body, type):
 			extra_info = f"reports on {target.permalink}"
 		elif type == 'modmail':
 			extra_info = "modmail"
-		elif type in ('comment', 'message'):
+		elif type in {'comment', 'message'}:
 			for id in (CARP_ID, AEVANN_ID):
 				n = Notification(comment_id=target.id, user_id=id)
 				g.db.add(n)
diff --git a/files/helpers/media.py b/files/helpers/media.py
index ec405eded..aa2989d0a 100644
--- a/files/helpers/media.py
+++ b/files/helpers/media.py
@@ -174,11 +174,11 @@ def process_image(filename:str, v, resize=0, trim=False, uploader_id:Optional[in
 			path = filename.rsplit('/', 1)[0]
 			kind = path.split('/')[-1]
 
-			if kind in ('banners','sidebar'):
+			if kind in {'banners','sidebar'}:
 				hashes = {}
 
 				for img in os.listdir(path):
-					if resize == 400 and img in ('256.webp','585.webp'): continue
+					if resize == 400 and img in {'256.webp','585.webp'}: continue
 					img_path = f'{path}/{img}'
 					if img_path == filename: continue
 
diff --git a/files/helpers/sanitize.py b/files/helpers/sanitize.py
index 5a5a4fd6a..20bb454cf 100644
--- a/files/helpers/sanitize.py
+++ b/files/helpers/sanitize.py
@@ -87,7 +87,7 @@ def allowed_attributes(tag, name, value):
 		if name == 'preload' and value == 'none': return True
 
 	if tag == 'p':
-		if name == 'class' and value in ('mb-0','resizable'): return True
+		if name == 'class' and value in {'mb-0','resizable'}: return True
 
 	if tag == 'span':
 		if name == 'data-bs-toggle' and value == 'tooltip': return True
diff --git a/files/helpers/twentyone.py b/files/helpers/twentyone.py
index 916d3f507..ba9d29a9b 100644
--- a/files/helpers/twentyone.py
+++ b/files/helpers/twentyone.py
@@ -246,7 +246,7 @@ def handle_payout(gambler, state, game):
 	gambler.pay_account(game.currency, payout)
 	
 	if game.currency == 'coins':
-		if status in (BlackjackStatus.BLACKJACK, BlackjackStatus.WON):
+		if status in {BlackjackStatus.BLACKJACK, BlackjackStatus.WON}:
 			distribute_wager_badges(gambler, game.wager, won=True)
 		elif status == BlackjackStatus.LOST:
 			distribute_wager_badges(gambler, game.wager, won=False)
diff --git a/files/routes/awards.py b/files/routes/awards.py
index 23b724573..415442e68 100644
--- a/files/routes/awards.py
+++ b/files/routes/awards.py
@@ -165,7 +165,7 @@ def award_thing(v, thing_type, id):
 	note = request.values.get("note", "").strip()
 
 
-	if SITE == 'rdrama.net' and author.id in (PIZZASHILL_ID,) and v.id not in (AEVANN_ID, SNAKES_ID):
+	if SITE == 'rdrama.net' and author.id == PIZZASHILL_ID and v.id not in {AEVANN_ID, SNAKES_ID}:
 		abort(403, f"@{author.username} is immune to awards.")
 
 	if kind == "benefactor" and author.id == v.id:
diff --git a/files/routes/casino.py b/files/routes/casino.py
index c66722c2f..6688ec8dd 100644
--- a/files/routes/casino.py
+++ b/files/routes/casino.py
@@ -89,7 +89,7 @@ def pull_slots(v:User):
 
 	try:
 		currency = request.values.get("currency", "").lower()
-		if currency not in ('coins', 'marseybux'): raise ValueError()
+		if currency not in {'coins', 'marseybux'}: raise ValueError()
 	except:
 		abort(400, "Invalid currency (expected 'coins' or 'marseybux').")
 
diff --git a/files/routes/comments.py b/files/routes/comments.py
index 4bf5275da..1f18f8aaa 100644
--- a/files/routes/comments.py
+++ b/files/routes/comments.py
@@ -126,7 +126,7 @@ def comment(v:User):
 	if posting_to_submission:
 		sub = post_target.sub
 		if sub and v.exiled_from(sub): abort(403, f"You're exiled from /h/{sub}")
-		if sub in ('furry','vampire','racist','femboy') and not v.client and not v.house.lower().startswith(sub):
+		if sub in {'furry','vampire','racist','femboy'} and not v.client and not v.house.lower().startswith(sub):
 			abort(403, f"You need to be a member of House {sub.capitalize()} to comment in /h/{sub}")
 
 	if level > COMMENT_MAX_DEPTH: abort(400, f"Max comment level is {COMMENT_MAX_DEPTH}")
diff --git a/files/routes/polls.py b/files/routes/polls.py
index 7b084dece..e0fa4465b 100644
--- a/files/routes/polls.py
+++ b/files/routes/polls.py
@@ -16,7 +16,7 @@ def vote_option(option_id, v):
 	if not option: abort(404)
 	sub = option.post.sub
 
-	if sub in ('furry','vampire','racist','femboy') and not v.house.lower().startswith(sub):
+	if sub in {'furry','vampire','racist','femboy'} and not v.house.lower().startswith(sub):
 		abort(403, f"You need to be a member of House {sub.capitalize()} to vote on polls in /h/{sub}")
 
 	if option.exclusive == 2:
@@ -92,7 +92,7 @@ def vote_option_comment(option_id, v):
 	option = g.db.get(CommentOption, option_id)
 	if not option: abort(404)
 	sub = option.comment.post.sub
-	if sub in ('furry','vampire','racist','femboy') and not v.house.lower().startswith(sub):
+	if sub in {'furry','vampire','racist','femboy'} and not v.house.lower().startswith(sub):
 		abort(403, f"You need to be a member of House {sub.capitalize()} to vote on polls in /h/{sub}")
 
 	if option.exclusive:
diff --git a/files/routes/posts.py b/files/routes/posts.py
index 31aeae1b1..896addc9f 100644
--- a/files/routes/posts.py
+++ b/files/routes/posts.py
@@ -493,7 +493,7 @@ def is_repost():
 	parsed_url = urlparse(url)
 
 	domain = parsed_url.netloc
-	if domain in ('old.reddit.com','twitter.com','instagram.com','tiktok.com') and '/search' not in url:
+	if domain in {'old.reddit.com','twitter.com','instagram.com','tiktok.com'} and '/search' not in url:
 		new_url = ParseResult(scheme="https",
 				netloc=parsed_url.netloc,
 				path=parsed_url.path,
@@ -561,7 +561,7 @@ def submit_post(v:User, sub=None):
 		allowed = [x[0] for x in allowed]
 		if v.id not in allowed: return error("You don't have sufficient permissions to post in /h/changelog")
 
-	if sub in ('furry','vampire','racist','femboy') and not v.client and not v.house.lower().startswith(sub):
+	if sub in {'furry','vampire','racist','femboy'} and not v.client and not v.house.lower().startswith(sub):
 		return error(f"You need to be a member of House {sub.capitalize()} to post in /h/{sub}")
 
 	if sub and sub != 'none':
@@ -590,7 +590,7 @@ def submit_post(v:User, sub=None):
 		parsed_url = urlparse(url)
 
 		domain = parsed_url.netloc
-		if domain in ('old.reddit.com','twitter.com','instagram.com','tiktok.com') and '/search' not in url:
+		if domain in {'old.reddit.com','twitter.com','instagram.com','tiktok.com'} and '/search' not in url:
 			new_url = ParseResult(scheme="https",
 					netloc=parsed_url.netloc,
 					path=parsed_url.path,
diff --git a/files/routes/reporting.py b/files/routes/reporting.py
index 08f36ddf4..7a66b90a4 100644
--- a/files/routes/reporting.py
+++ b/files/routes/reporting.py
@@ -152,7 +152,7 @@ def move_post(post:Submission, v:User, reason:str) -> Union[bool, str]:
 	if post.author.exiled_from(sub_to):
 		abort(403, f"User is exiled from this {HOLE_NAME}!")
 
-	if sub_to in ('furry','vampire','racist','femboy') and not v.client and not post.author.house.lower().startswith(sub_to):
+	if sub_to in {'furry','vampire','racist','femboy'} and not v.client and not post.author.house.lower().startswith(sub_to):
 		if v.id == post.author_id:
 			abort(403, f"You need to be a member of House {sub_to.capitalize()} to post in /h/{sub_to}")
 		else:
diff --git a/files/routes/static.py b/files/routes/static.py
index c776dac2c..07643d21f 100644
--- a/files/routes/static.py
+++ b/files/routes/static.py
@@ -106,7 +106,8 @@ def daily_chart(v:User):
 @app.get("/paypigs")
 @admin_level_required(PERMS['VIEW_PATRONS'])
 def patrons(v):
-	if AEVANN_ID and v.id not in (AEVANN_ID, CARP_ID, SNAKES_ID): abort(404)
+	if AEVANN_ID and v.id not in {AEVANN_ID, CARP_ID, SNAKES_ID}:
+		abort(404)
 
 	users = g.db.query(User).filter(User.patron > 0).order_by(User.patron.desc(), User.id).all()
 
diff --git a/files/routes/subs.py b/files/routes/subs.py
index a27da956e..ce336a1b4 100644
--- a/files/routes/subs.py
+++ b/files/routes/subs.py
@@ -239,7 +239,7 @@ def add_mod(v:User, sub):
 
 	user = get_user(user, v=v, include_shadowbanned=False)
 
-	if sub in ('furry','vampire','racist','femboy') and not v.client and not user.house.lower().startswith(sub):
+	if sub in {'furry','vampire','racist','femboy'} and not v.client and not user.house.lower().startswith(sub):
 		abort(403, f"@{user.username} needs to be a member of House {sub.capitalize()} to be added as a mod there!")
 
 	existing = g.db.query(Mod).filter_by(user_id=user.id, sub=sub).one_or_none()
diff --git a/files/routes/users.py b/files/routes/users.py
index be8fb72dc..26bfdcb0d 100644
--- a/files/routes/users.py
+++ b/files/routes/users.py
@@ -544,7 +544,7 @@ def messagereply(v:User):
 	execute_blackjack(v, c, c.body_html, 'message')
 	execute_under_siege(v, c, c.body_html, 'message')
 
-	if user_id and user_id not in (v.id, MODMAIL_ID, bots):
+	if user_id and user_id not in {v.id, MODMAIL_ID, bots}:
 		notif = g.db.query(Notification).filter_by(comment_id=c.id, user_id=user_id).one_or_none()
 		if not notif:
 			notif = Notification(comment_id=c.id, user_id=user_id)