diff --git a/test/functional/blockchain.py b/test/functional/blockchain.py
index 0e868945d..b6112c728 100755
--- a/test/functional/blockchain.py
+++ b/test/functional/blockchain.py
@@ -24,7 +24,6 @@ from test_framework.util import (
     assert_raises_jsonrpc,
     assert_is_hex_string,
     assert_is_hash_string,
-    connect_nodes_bi,
 )
 
 
diff --git a/test/functional/fundrawtransaction.py b/test/functional/fundrawtransaction.py
index 25bfb3f9a..c41afe2b9 100755
--- a/test/functional/fundrawtransaction.py
+++ b/test/functional/fundrawtransaction.py
@@ -448,10 +448,10 @@ class RawTransactionsTest(BitcoinTestFramework):
 
         ############################################################
         # locked wallet test
-        self.nodes[1].encryptwallet("test")
         self.stop_node(0)
         self.stop_node(2)
         self.stop_node(3)
+        self.nodes[1].encryptwallet("test")
         self.nodes.pop(1)
 
         self.nodes = self.start_nodes(self.num_nodes, self.options.tmpdir)
diff --git a/test/functional/net.py b/test/functional/net.py
index 102ca52fc..fb4606444 100755
--- a/test/functional/net.py
+++ b/test/functional/net.py
@@ -14,7 +14,8 @@ from test_framework.util import (
     assert_equal,
     assert_raises_jsonrpc,
     connect_nodes_bi,
-    p2p_port)
+    p2p_port,
+)
 
 
 class NetTest(BitcoinTestFramework):