def yprv(self):
    if self.testnet:
        version = TESTNET_YPRV
    else:
        version = MAINNET_YPRV
    return self._prv(version)
def yprv(self):
    if self.testnet:
        version = TESTNET_YPRV
    else:
        version = MAINNET_YPRV
    return self._prv(version)