message: [tests] fix nodehandling.py flake8 warnings
  Github-Pull:
  Rebased-From:
diff: #
  # Test node handling
  #
  +import time
  +import urllib.parse
  from test_framework.test_framework import BitcoinTestFramework
  -from test_framework.util import *
  -
  -import urllib.parse
  +from test_framework.util import (assert_equal,
  + assert_raises_jsonrpc,
  + connect_nodes_bi,
  + p2p_port,
  + start_node,
  + stop_node,
  + )
  class NodeHandlingTest(BitcoinTestFramework):
  @@ -45,7 +51,7 @@ class NodeHandlingTest (BitcoinTestFramework):
  self.nodes[2].clearbanned()
  assert_equal(len(self.nodes[2].listbanned()), 0)
  - ##test persisted banlist
  + # test persisted banlist
  self.nodes[2].setban("127.0.0.0/32", "add")
  self.nodes[2].setban("127.0.0.0/24", "add")
  self.nodes[2].setban("192.168.0.1", "add", 1) # ban for 1 seconds
  