diff --git a/noxfile.py b/noxfile.py
index 5dcd9d81..8cb22c40 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -48,7 +48,7 @@ def format(session):
     session.install("black", "isort")
 
     session.run("isort", "--profile=black", *SOURCE_FILES)
-    session.run("black", "--target-version=py27", *SOURCE_FILES)
+    session.run("black", "--target-version=py33", *SOURCE_FILES)
     session.run("python", "utils/license-headers.py", "fix", *SOURCE_FILES)
 
     lint(session)
diff --git a/opensearchpy/_async/client/__init__.py b/opensearchpy/_async/client/__init__.py
index d9eb3679..239bef64 100644
--- a/opensearchpy/_async/client/__init__.py
+++ b/opensearchpy/_async/client/__init__.py
@@ -1953,11 +1953,16 @@ async def list_all_point_in_time(self, params=None, headers=None):
         Returns the list of point in times which are alive
         """
         return await self.transport.perform_request(
-            "GET", _make_path("_search", "point_in_time", "_all"), params=params, headers=headers
+            "GET",
+            _make_path("_search", "point_in_time", "_all"),
+            params=params,
+            headers=headers,
         )
 
     @query_params()
-    async def delete_point_in_time(self, body=None, all=False, params=None, headers=None):
+    async def delete_point_in_time(
+        self, body=None, all=False, params=None, headers=None
+    ):
         """
         Delete a point in time
 
@@ -1965,7 +1970,11 @@ async def delete_point_in_time(self, body=None, all=False, params=None, headers=
         :arg body: a point-in-time id to delete
         :arg all: set it to `True` to delete all alive point in time.
         """
-        path = _make_path("_search", "point_in_time", "_all") if all else _make_path("_search", "point_in_time")
+        path = (
+            _make_path("_search", "point_in_time", "_all")
+            if all
+            else _make_path("_search", "point_in_time")
+        )
         return await self.transport.perform_request(
             "DELETE", path, params=params, headers=headers, body=body
         )
@@ -1992,7 +2001,10 @@ async def create_point_in_time(self, index=None, params=None, headers=None):
         :arg routing: Specific routing value
         """
         return await self.transport.perform_request(
-            "POST", _make_path(index, "_search", "point_in_time"), params=params, headers=headers
+            "POST",
+            _make_path(index, "_search", "point_in_time"),
+            params=params,
+            headers=headers,
         )
 
     @query_params()
diff --git a/opensearchpy/client/__init__.py b/opensearchpy/client/__init__.py
index 757a22c8..6e3dea01 100644
--- a/opensearchpy/client/__init__.py
+++ b/opensearchpy/client/__init__.py
@@ -1952,10 +1952,12 @@ def list_all_point_in_time(self, params=None, headers=None):
         Returns the list of active point in times searches
         """
         return self.transport.perform_request(
-            "GET", _make_path("_search", "point_in_time", "_all"), params=params, headers=headers
+            "GET",
+            _make_path("_search", "point_in_time", "_all"),
+            params=params,
+            headers=headers,
         )
 
-    
     @query_params()
     def delete_point_in_time(self, body=None, all=False, params=None, headers=None):
         """
@@ -1966,9 +1968,13 @@ def delete_point_in_time(self, body=None, all=False, params=None, headers=None):
         :arg all: set it to `True` to delete all alive point in time.
         """
 
-        path = _make_path("_search", "point_in_time", "_all") if all else _make_path("_search", "point_in_time")
+        path = (
+            _make_path("_search", "point_in_time", "_all")
+            if all
+            else _make_path("_search", "point_in_time")
+        )
         return self.transport.perform_request(
-                "DELETE", path, params=params, headers=headers, body=body
+            "DELETE", path, params=params, headers=headers, body=body
         )
 
     @query_params(
@@ -1993,7 +1999,10 @@ def create_point_in_time(self, index=None, params=None, headers=None):
         :arg routing: Specific routing value
         """
         return self.transport.perform_request(
-            "POST", _make_path(index, "_search", "point_in_time"), params=params, headers=headers
+            "POST",
+            _make_path(index, "_search", "point_in_time"),
+            params=params,
+            headers=headers,
         )
 
     @query_params()
diff --git a/test_opensearchpy/test_client/test_point_in_time.py b/test_opensearchpy/test_client/test_point_in_time.py
index 47f0c222..0ca63789 100644
--- a/test_opensearchpy/test_client/test_point_in_time.py
+++ b/test_opensearchpy/test_client/test_point_in_time.py
@@ -34,9 +34,7 @@ def test_create_one_point_in_time(self):
         self.assert_url_called("POST", "/test-index/_search/point_in_time")
 
     def test_delete_one_point_in_time(self):
-        self.client.delete_point_in_time(body={
-            "pit_id": ["Sample-PIT-ID"]
-        })
+        self.client.delete_point_in_time(body={"pit_id": ["Sample-PIT-ID"]})
         self.assert_url_called("DELETE", "/_search/point_in_time")
 
     def test_delete_all_point_in_time(self):