fix: return a naive UTC object (pypi#14871)

tests/unit/test_filters.py

@@ -22,6 +22,16 @@
 from urllib3.util import parse_url
 
 from warehouse import filters
+from warehouse.utils import now
+
+
+def test_now():
+    assert isinstance(now(), datetime.datetime)
+    assert now().tzinfo is None
+    with pytest.raises(TypeError) as excinfo:
+        _ = now() < datetime.datetime.now(datetime.UTC)
+    assert "can't compare offset-naive and offset-aware datetimes" in str(excinfo.value)
+    assert now() <= datetime.datetime.now()
 
 
 def test_camo_url():

warehouse/utils/__init__.py

@@ -14,7 +14,8 @@
 
 
 def now() -> datetime.datetime:
-    return datetime.datetime.now(datetime.UTC)
+    """Return the current datetime in UTC without a timezone."""
+    return datetime.datetime.now(datetime.UTC).replace(tzinfo=None)
 
 
 def dotted_navigator(path):