message: test: pep-8 touched test
  Can be reviewed with "--word-diff-regex=.".
diff: # Distributed under the MIT software license, see the accompanying
  # file COPYING or http://www.opensource.org/licenses/mit-license.php.
  """Useful Script constants and utils."""
  -from test_framework.script import CScript, hash160, sha256, OP_0, OP_DUP, OP_HASH160, OP_CHECKSIG, OP_EQUAL, OP_EQUALVERIFY
  +from test_framework.script import (
  + CScript,
  + hash160,
  + sha256,
  + OP_0,
  + OP_DUP,
  + OP_HASH160,
  + OP_CHECKSIG,
  + OP_EQUAL,
  + OP_EQUALVERIFY,
  +)
  # To prevent a "tx-size-small" policy rule error, a transaction has to have a
  # non-witness size of at least 82 bytes (MIN_STANDARD_TX_NONWITNESS_SIZE in
  @@ -25,27 +35,33 @@ from test_framework.script import CScript, hash160, sha256, OP_0, OP_DUP, OP_HAS
  DUMMY_P2WPKH_SCRIPT = CScript([b'a' * 21])
  DUMMY_2_P2WPKH_SCRIPT = CScript([b'b' * 21])
  +
  def keyhash_to_p2pkh_script(hash):
  assert len(hash) == 20
  return CScript([OP_DUP, OP_HASH160, hash, OP_EQUALVERIFY, OP_CHECKSIG])
  +
  def scripthash_to_p2sh_script(hash):
  assert len(hash) == 20
  return CScript([OP_HASH160, hash, OP_EQUAL])
  +
  def key_to_p2pkh_script(key):
  key = check_key(key)
  return keyhash_to_p2pkh_script(hash160(key))
  +
  def script_to_p2sh_script(script):
  script = check_script(script)
  return scripthash_to_p2sh_script(hash160(script))
  +
  def key_to_p2sh_p2wpkh_script(key):
  key = check_key(key)
  p2shscript = CScript([OP_0, hash160(key)])
  return script_to_p2sh_script(p2shscript)
  +
  def program_to_witness_script(version, program):
  if isinstance(program, str):
  program = bytes.fromhex(program)
  @@ -54,19 +70,23 @@ def program_to_witness_script(version, program):
  assert version > 0 or len(program) in [20, 32]
  return CScript([version, program])
  +
  def script_to_p2wsh_script(script):
  script = check_script(script)
  return program_to_witness_script(0, sha256(script))
  +
  def key_to_p2wpkh_script(key):
  key = check_key(key)
  return program_to_witness_script(0, hash160(key))
  +
  def script_to_p2sh_p2wsh_script(script):
  script = check_script(script)
  p2shscript = CScript([OP_0, sha256(script)])
  return script_to_p2sh_script(p2shscript)
  +
  def check_key(key):
  if isinstance(key, str):
  key = bytes.fromhex(key) # Assuming this is hex string
  @@ -74,6 +94,7 @@ def check_key(key):
  return key
  assert False
  +
  def check_script(script):
  if isinstance(script, str):
  script = bytes.fromhex(script) # Assuming this is hex string
  