message: Improve mempool_accept_wtxid.py
  Improve mempool_accept_wtxid.py
  Improve mempool_accept_wtxid.py
  Improve mempool_accept_wtxid.py
  Improve mempool_accept_wtxid.py
diff: # file COPYING or http://www.opensource.org/licenses/mit-license.php.
  """
  Test mempool acceptance in case of an already known transaction
  -with identical non-witness data different witness.
  +with identical non-witness data but different witness.
  """
  +from copy import deepcopy
  from test_framework.messages import (
  COIN,
  COutPoint,
  @@ -79,10 +80,7 @@ class MempoolWtxidTest(BitcoinTestFramework):
  child_one_txid = child_one.rehash()
  # Create another identical transaction with witness solving second branch
  - child_two = CTransaction()
  - child_two.vin.append(CTxIn(COutPoint(int(parent_txid, 16), 0), b""))
  - child_two.vout.append(CTxOut(int(9.99996 * COIN), child_script_pubkey))
  - child_two.wit.vtxinwit.append(CTxInWitness())
  + child_two = deepcopy(child_one)
  child_two.wit.vtxinwit[0].scriptWitness.stack = [b'', witness_script]
  child_two_wtxid = child_two.getwtxid()
  child_two_txid = child_two.rehash()
  @@ -104,8 +102,7 @@ class MempoolWtxidTest(BitcoinTestFramework):
  "allowed": False,
  "reject-reason": "txn-already-in-mempool"
  }])
  - testres_child_two = node.testmempoolaccept([child_two.serialize().hex()])[0]
  - assert_equal(testres_child_two, {
  + assert_equal(node.testmempoolaccept([child_two.serialize().hex()])[0], {
  "txid": child_two_txid,
  "wtxid": child_two_wtxid,
  "allowed": False,
  