diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 5d6864407..094368644 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -66,7 +66,6 @@ repos:
             | openstack/key_manager/.*
             | openstack/load_balancer/.*
             | openstack/message/.*
-            | openstack/object_store/.*
             | openstack/orchestration/.*
             | openstack/placement/.*
             | openstack/shared_file_system/.*
diff --git a/openstack/object_store/v1/_base.py b/openstack/object_store/v1/_base.py
index a39286f5e..0b1c4dfed 100644
--- a/openstack/object_store/v1/_base.py
+++ b/openstack/object_store/v1/_base.py
@@ -11,6 +11,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+import typing as ty
+
 from openstack import exceptions
 from openstack import resource
 
@@ -20,11 +22,11 @@ class BaseResource(resource.Resource):
     create_method = 'PUT'
 
     #: Metadata stored for this resource. *Type: dict*
-    metadata = dict()
+    metadata: ty.Dict[str, ty.Any] = {}
 
-    _custom_metadata_prefix = None
-    _system_metadata = dict()
-    _last_headers = dict()
+    _custom_metadata_prefix: str
+    _system_metadata: ty.Dict[str, ty.Any] = {}
+    _last_headers: ty.Dict[str, ty.Any] = {}
 
     def __init__(self, metadata=None, **attrs):
         """Process and save metadata known at creation stage"""
diff --git a/openstack/object_store/v1/_proxy.py b/openstack/object_store/v1/_proxy.py
index f66032f99..a63d9dc2c 100644
--- a/openstack/object_store/v1/_proxy.py
+++ b/openstack/object_store/v1/_proxy.py
@@ -769,15 +769,17 @@ class Proxy(proxy.Proxy):
         try:
             # caps = self.get_object_capabilities()
             caps = self.get_info()
-        except exceptions.SDKException as e:
-            if e.response.status_code in (404, 412):
-                server_max_file_size = DEFAULT_MAX_FILE_SIZE
-                self._connection.log.info(
-                    "Swift capabilities not supported. "
-                    "Using default max file size."
-                )
-            else:
-                raise
+        except (
+            exceptions.NotFoundException,
+            exceptions.PreconditionFailedException,
+        ):
+            server_max_file_size = DEFAULT_MAX_FILE_SIZE
+            self._connection.log.info(
+                "Swift capabilities not supported. "
+                "Using default max file size."
+            )
+        except exceptions.SDKException:
+            raise
         else:
             server_max_file_size = caps.swift.get('max_file_size', 0)
             min_segment_size = caps.slo.get('min_segment_size', 0)
@@ -935,8 +937,7 @@ class Proxy(proxy.Proxy):
             max_upload_count,
             expires,
         )
-        data = data.encode('utf8')
-        sig = hmac.new(temp_url_key, data, sha1).hexdigest()
+        sig = hmac.new(temp_url_key, data.encode(), sha1).hexdigest()
 
         return (expires, sig)
 
@@ -992,18 +993,17 @@ class Proxy(proxy.Proxy):
                     try:
                         t = time.strptime(seconds, f)
                     except ValueError:
-                        t = None
+                        continue
+
+                    if f == EXPIRES_ISO8601_FORMAT:
+                        timestamp = timegm(t)
                     else:
-                        if f == EXPIRES_ISO8601_FORMAT:
-                            timestamp = timegm(t)
-                        else:
-                            # Use local time if UTC designator is missing.
-                            timestamp = int(time.mktime(t))
+                        # Use local time if UTC designator is missing.
+                        timestamp = int(time.mktime(t))
 
-                        absolute = True
-                        break
-
-                if t is None:
+                    absolute = True
+                    break
+                else:
                     raise ValueError()
             else:
                 if not timestamp.is_integer():
@@ -1046,6 +1046,7 @@ class Proxy(proxy.Proxy):
                 method.upper(),
             )
 
+        expiration: float | int
         if not absolute:
             expiration = _get_expiration(timestamp)
         else:
@@ -1074,12 +1075,16 @@ class Proxy(proxy.Proxy):
         ).hexdigest()
 
         if iso8601:
-            expiration = time.strftime(
+            exp = time.strftime(
                 EXPIRES_ISO8601_FORMAT, time.gmtime(expiration)
             )
+        else:
+            exp = str(expiration)
 
         temp_url = u'{path}?temp_url_sig={sig}&temp_url_expires={exp}'.format(
-            path=path_for_body, sig=sig, exp=expiration
+            path=path_for_body,
+            sig=sig,
+            exp=exp,
         )
 
         if ip_range:
@@ -1143,7 +1148,7 @@ class Proxy(proxy.Proxy):
             return
 
         is_bulk_delete_supported = False
-        bulk_delete_max_per_request = None
+        bulk_delete_max_per_request = 1
         try:
             caps = self.get_info()
         except exceptions.SDKException:
diff --git a/openstack/resource.py b/openstack/resource.py
index 4841036ee..9cc47c8b3 100644
--- a/openstack/resource.py
+++ b/openstack/resource.py
@@ -460,7 +460,7 @@ class Resource(dict):
     #: Plural form of key for resource.
     resources_key: ty.Optional[str] = None
     #: Key used for pagination links
-    pagination_key = None
+    pagination_key: ty.Optional[str] = None
 
     #: The ID of this resource.
     id = Body("id")
diff --git a/setup.cfg b/setup.cfg
index a9a8f5777..2b002bfda 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -60,7 +60,6 @@ exclude = (?x)(
     | openstack/key_manager
     | openstack/load_balancer
     | openstack/message
-    | openstack/object_store
     | openstack/orchestration
     | openstack/placement
     | openstack/shared_file_system