def _serialize(self, with_inputs: bool = True) -> bytes:
stream = BCDataStream()
stream.write_uint32(self.version)
if with_inputs:
stream.write_compact_size(len(self._inputs))
for txin in self._inputs:
txin.serialize_to(stream)
stream.write_compact_size(len(self._outputs))
for txout in self._outputs:
txout.serialize_to(stream)
stream.write_uint32(self.locktime)
return stream.get_bytes()
def _serialize_for_signature(self, signing_input: int) -> bytes:
stream = BCDataStream()
stream.write_uint32(self.version)
stream.write_compact_size(len(self._inputs))
for i, txin in enumerate(self._inputs):
if signing_input == i:
assert txin.txo_ref.txo is not None
txin.serialize_to(stream, txin.txo_ref.txo.script.source)
else:
txin.serialize_to(stream, b'')
stream.write_compact_size(len(self._outputs))
for txout in self._outputs:
txout.serialize_to(stream)
stream.write_uint32(self.locktime)
stream.write_uint32(self.signature_hash_type(1)) # signature hash type: SIGHASH_ALL
return stream.get_bytes()