Fix lint issues

hc/accounts/admin.py

@@ -1,7 +1,5 @@
 from __future__ import annotations
 
-from datetime import timedelta as td
-
 from django.contrib import admin
 from django.contrib.auth import login as auth_login
 from django.contrib.auth.admin import UserAdmin
@@ -12,7 +10,6 @@ from django.template.loader import render_to_string
 from django.urls import reverse
 from django.utils.html import escape
 from django.utils.safestring import mark_safe
-from django.utils.timezone import now
 
 from hc.accounts.models import Credential, Profile, Project
 

hc/front/management/commands/render_docs.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-import os
+from importlib.util import find_spec
 
 from django.conf import settings
 from django.core.management.base import BaseCommand
@@ -10,16 +10,14 @@ class Command(BaseCommand):
     help = "Renders Markdown to HTML"
 
     def handle(self, *args, **options):
-        try:
-            import markdown
+        for pkg in ("markdown", "pygments"):
+            if find_spec(pkg) is None:
+                self.stdout.write(f"This command requires the {pkg} package.")
+                self.stdout.write("Please install it with:\n\n")
+                self.stdout.write(f"  pip install {pkg}\n\n")
+                return
 
-            # We use pygments for highlighting code samples
-            import pygments
-        except ImportError as e:
-            self.stdout.write(f"This command requires the {e.name} package.")
-            self.stdout.write("Please install it with:\n\n")
-            self.stdout.write(f"  pip install {e.name}\n\n")
-            return
+        import markdown
 
         extensions = [
             "fenced_code",

hc/front/tests/test_add_ntfy.py

@@ -1,7 +1,5 @@
 from __future__ import annotations
 
-from django.test.utils import override_settings
-
 from hc.api.models import Channel, Check
 from hc.test import BaseTestCase
 

hc/front/tests/test_serve_doc.py

@@ -24,7 +24,7 @@ class ServeDocTestCase(TestCase):
 
     @patch("hc.front.views.settings.BASE_DIR")
     def test_it_rejects_bad_characters(self, mock_base_dir):
-        r = self.client.get("/docs/NAUGHTY/")
+        self.client.get("/docs/NAUGHTY/")
         # URL dispatcher's slug filter lets the uppercase letters through,
         # but the view should still reject them, before any filesystem
         # operations

hc/lib/s3.py

@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 import logging
-import time
 from io import BytesIO
 from threading import Thread