diff --git a/octavia/amphorae/backends/agent/api_server/osutils.py b/octavia/amphorae/backends/agent/api_server/osutils.py
index 25322164d5..16d34295c7 100644
--- a/octavia/amphorae/backends/agent/api_server/osutils.py
+++ b/octavia/amphorae/backends/agent/api_server/osutils.py
@@ -38,8 +38,7 @@ class BaseOS(object):
     @classmethod
     def _get_subclasses(cls):
         for subclass in cls.__subclasses__():
-            for sc in subclass._get_subclasses():
-                yield sc
+            yield from subclass._get_subclasses()
             yield subclass
 
     @classmethod
diff --git a/octavia/common/tls_utils/cert_parser.py b/octavia/common/tls_utils/cert_parser.py
index f1e6e8dbe6..62c394ed3c 100644
--- a/octavia/common/tls_utils/cert_parser.py
+++ b/octavia/common/tls_utils/cert_parser.py
@@ -164,16 +164,14 @@ def _parse_pkcs7_bundle(pkcs7):
     if PKCS7_BEG in pkcs7:
         try:
             for substrate in _read_pem_blocks(pkcs7):
-                for cert in _get_certs_from_pkcs7_substrate(substrate):
-                    yield cert
+                yield from _get_certs_from_pkcs7_substrate(substrate)
         except Exception as e:
             LOG.exception('Unreadable Certificate.')
             raise exceptions.UnreadableCert from e
 
     # If no PEM encoding, assume this is DER encoded and try to decode
     else:
-        for cert in _get_certs_from_pkcs7_substrate(pkcs7):
-            yield cert
+        yield from _get_certs_from_pkcs7_substrate(pkcs7)
 
 
 def _read_pem_blocks(data):
diff --git a/octavia/network/drivers/noop_driver/driver.py b/octavia/network/drivers/noop_driver/driver.py
index 7fcef3dcea..e907d207d7 100644
--- a/octavia/network/drivers/noop_driver/driver.py
+++ b/octavia/network/drivers/noop_driver/driver.py
@@ -204,8 +204,7 @@ class NoopManager(object):
                 return len(self.known_subnets) + 1
 
             def __iter__(self):
-                for subnet_id in self.known_subnets:
-                    yield subnet_id
+                yield from self.known_subnets
                 subnet = network_models.Subnet(id=uuidutils.generate_uuid(),
                                                network_id=self.network.id)
                 self.known_subnets[subnet.id] = subnet