diff --git a/doorcontrol/hid/DoorController.py b/doorcontrol/hid/DoorController.py
index b51b21a..da4421d 100644
--- a/doorcontrol/hid/DoorController.py
+++ b/doorcontrol/hid/DoorController.py
@@ -1,3 +1,4 @@
+import contextlib
 import csv
 from datetime import datetime
 from io import StringIO
@@ -120,11 +121,8 @@ class DoorController:
                 for ii in range(1, 8)
             ]
         )
-        try:
-            self.doXMLRequest(delXML)
-        except RemoteError:
-            # don't care about failure to delete, they probably just didn't exist
-            pass
+        # don't care about failure to delete, they probably just didn't exist
+        contextlib.suppress(self.doXMLRequest(delXML))
 
         # load new schedules
         self.doXMLRequest(schedules)
diff --git a/membershipworks/membershipworks_api.py b/membershipworks/membershipworks_api.py
index 5dfa673..aa1f550 100644
--- a/membershipworks/membershipworks_api.py
+++ b/membershipworks/membershipworks_api.py
@@ -138,9 +138,8 @@ class MembershipWorks:
                 for element in box["box"]:
                     if not isinstance(element["dat"], str):
                         for field in element["dat"]:
-                            if "_id" in field:
-                                if field["_id"] not in fields:
-                                    fields[field["_id"]] = field
+                            if "_id" in field and field["_id"] not in fields:
+                                fields[field["_id"]] = field
 
         return fields
 
@@ -218,7 +217,7 @@ class MembershipWorks:
         r = self._get_v1(
             BASE_URL + "/v1/csv",
             params={
-                "crm": ",".join(str(k) for k in CRM.keys()),
+                "crm": ",".join(str(k) for k in CRM),
                 **({"txl": ""} if json else {}),
                 "sdp": start_date.strftime("%s"),
                 "edp": end_date.strftime("%s"),
diff --git a/membershipworks/tasks/scrape.py b/membershipworks/tasks/scrape.py
index dd101c8..065b59f 100644
--- a/membershipworks/tasks/scrape.py
+++ b/membershipworks/tasks/scrape.py
@@ -55,9 +55,7 @@ def scrape_members(membershipworks: MembershipWorks):
                 field.get("typ") == FieldType.CHECKBOX.value
                 and field["lbl"] in csv_member
             ):
-                csv_member[field["lbl"]] = (
-                    True if csv_member[field["lbl"]] == "Y" else False
-                )
+                csv_member[field["lbl"]] = csv_member[field["lbl"]] == "Y"
 
         # create/update member
         member = Member.from_api_dict(csv_member)
diff --git a/pyproject.toml b/pyproject.toml
index 7878065..22c5e93 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,7 +43,7 @@ admin_email = "cmsmanage.django_q2_admin_email_reporter:AdminEmailReporter"
 
 [tool.ruff]
 line-length = 88
-select = ["E4", "E7", "E9", "F", "I", "C4", "UP", "PERF", "PL"]
+select = ["E4", "E7", "E9", "F", "I", "C4", "UP", "PERF", "PL", "SIM"]
 
 [tool.ruff.lint.isort]
 known-first-party = [
diff --git a/rentals/views.py b/rentals/views.py
index 91bfa7d..2861496 100644
--- a/rentals/views.py
+++ b/rentals/views.py
@@ -1,7 +1,7 @@
 from django.contrib import messages
 from django.contrib.auth.decorators import login_required, permission_required
 from django.http import HttpResponseRedirect
-from django.shortcuts import render
+from django.shortcuts import get_object_or_404, render
 from django.urls import reverse
 
 from .forms import LockerInfoForm
@@ -31,10 +31,7 @@ def lockerIndex(request):
 @permission_required("rentals.change_lockerinfo", raise_exception=True)
 def lockerUpdate(request, locker_id: int):
     if request.method == "POST":
-        try:
-            instance = LockerInfo.objects.get(pk=locker_id)
-        except LockerInfo.DoesNotExist:
-            pass  # TODO
+        instance = get_object_or_404(LockerInfo, pk=locker_id)
 
         form = LockerInfoForm(request.POST, instance=instance)
         if form.is_valid():