diff --git a/test/functional/mempool_persist.py b/test/functional/mempool_persist.py
--- a/test/functional/mempool_persist.py
+++ b/test/functional/mempool_persist.py
@@ -39,8 +39,8 @@
 import os
 import time
 
-from test_framework.test_framework import BitcoinTestFramework
 from test_framework.p2p import P2PTxInvStore
+from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
     assert_greater_than_or_equal,
diff --git a/test/functional/p2p_addr_relay.py b/test/functional/p2p_addr_relay.py
--- a/test/functional/p2p_addr_relay.py
+++ b/test/functional/p2p_addr_relay.py
@@ -11,9 +11,7 @@
     NODE_NETWORK,
     msg_addr,
 )
-from test_framework.p2p import (
-    P2PInterface,
-)
+from test_framework.p2p import P2PInterface
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
diff --git a/test/functional/p2p_eviction.py b/test/functional/p2p_eviction.py
--- a/test/functional/p2p_eviction.py
+++ b/test/functional/p2p_eviction.py
@@ -15,11 +15,11 @@
 
 import time
 
-from test_framework.test_framework import BitcoinTestFramework
-from test_framework.p2p import P2PInterface, P2PDataStore
-from test_framework.util import assert_equal, wait_until
 from test_framework.blocktools import create_block, create_coinbase
 from test_framework.messages import CTransaction, FromHex, msg_pong, msg_tx
+from test_framework.p2p import P2PDataStore, P2PInterface
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import assert_equal, wait_until
 
 
 class SlowP2PDataStore(P2PDataStore):
diff --git a/test/functional/p2p_feefilter.py b/test/functional/p2p_feefilter.py
--- a/test/functional/p2p_feefilter.py
+++ b/test/functional/p2p_feefilter.py
@@ -9,8 +9,8 @@
 
 from test_framework.messages import MSG_TX, msg_feefilter
 from test_framework.p2p import (
-    p2p_lock,
     P2PInterface,
+    p2p_lock,
 )
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_equal
diff --git a/test/functional/rpc_blockchain.py b/test/functional/rpc_blockchain.py
--- a/test/functional/rpc_blockchain.py
+++ b/test/functional/rpc_blockchain.py
@@ -23,16 +23,6 @@
 import http.client
 import subprocess
 
-from test_framework.test_framework import BitcoinTestFramework
-from test_framework.util import (
-    assert_equal,
-    assert_greater_than,
-    assert_greater_than_or_equal,
-    assert_raises,
-    assert_raises_rpc_error,
-    assert_is_hash_string,
-    assert_is_hex_string,
-)
 from test_framework.blocktools import (
     create_block,
     create_coinbase,
@@ -41,8 +31,16 @@
 from test_framework.messages import (
     msg_block,
 )
-from test_framework.p2p import (
-    P2PInterface,
+from test_framework.p2p import P2PInterface
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import (
+    assert_equal,
+    assert_greater_than,
+    assert_greater_than_or_equal,
+    assert_raises,
+    assert_raises_rpc_error,
+    assert_is_hex_string,
+    assert_is_hash_string,
 )
 
 
diff --git a/test/functional/rpc_net.py b/test/functional/rpc_net.py
--- a/test/functional/rpc_net.py
+++ b/test/functional/rpc_net.py
@@ -11,6 +11,13 @@
 from itertools import product
 import time
 
+from test_framework.p2p import P2PInterface
+import test_framework.messages
+from test_framework.messages import (
+    CAddress,
+    msg_addr,
+    NODE_NETWORK,
+)
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_approx,
@@ -22,13 +29,6 @@
     p2p_port,
     wait_until,
 )
-from test_framework.p2p import P2PInterface
-import test_framework.messages
-from test_framework.messages import (
-    CAddress,
-    msg_addr,
-    NODE_NETWORK,
-)
 
 
 def assert_net_servicesnames(servicesflag, servicenames):
diff --git a/test/functional/test_framework/test_framework.py b/test/functional/test_framework/test_framework.py
--- a/test/functional/test_framework/test_framework.py
+++ b/test/functional/test_framework/test_framework.py
@@ -19,8 +19,8 @@
 
 from .authproxy import JSONRPCException
 from . import coverage
-from .test_node import TestNode
 from .p2p import NetworkThread
+from .test_node import TestNode
 from .util import (
     assert_equal,
     check_json_precision,