Class CMutableTransaction

bitcoin/core/__init__.py:468–496

A mutable transaction

@__make_mutable
class CMutableTransaction(CTransaction):
    """A mutable transaction"""
    __slots__ = []

    def __init__(self, vin=None, vout=None, nLockTime=0, nVersion=1, witness=None):
        if not (0 <= nLockTime <= 0xffffffff):
            raise ValueError('CTransaction: nLockTime must be in range 0x0 to 0xffffffff; got %x' % nLockTime)
        self.nLockTime = nLockTime

        if vin is None:
            vin = []
        self.vin = vin

        if vout is None:
            vout = []
        self.vout = vout
        self.nVersion = nVersion

        if witness is None:
            witness = CTxWitness([CTxInWitness() for dummy in range(len(vin))])
        self.wit = witness

    @classmethod
    def from_tx(cls, tx):
        """Create a fully mutable copy of a pre-existing transaction"""
        vin = [CMutableTxIn.from_txin(txin) for txin in tx.vin]
        vout = [CMutableTxOut.from_txout(txout) for txout in tx.vout]

        return cls(vin, vout, tx.nLockTime, tx.nVersion, tx.wit)


class CBlockHeader(ImmutableSerializable):