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Python Contract.encodeABI方法代碼示例

本文整理匯總了Python中web3.contract.Contract.encodeABI方法的典型用法代碼示例。如果您正苦於以下問題:Python Contract.encodeABI方法的具體用法?Python Contract.encodeABI怎麽用?Python Contract.encodeABI使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在web3.contract.Contract的用法示例。


在下文中一共展示了Contract.encodeABI方法的1個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的Python代碼示例。

示例1: execute

# 需要導入模塊: from web3.contract import Contract [as 別名]
# 或者: from web3.contract.Contract import encodeABI [as 別名]
    def execute(
        self, to_contract: Contract, func: str, args=None, amount_in_eth: Optional[Decimal] = None, max_gas=100000
    ):
        """Calls a smart contract from the hosted wallet.

        Creates a transaction that is proxyed through hosted wallet execute method. We need to have ABI as Populus Contract instance.

        :param wallet_address: Wallet address
        :param contract: Contract to called as address bound Populus Contract class
        :param func: Method name to be called
        :param args: Arguments passed to the method
        :param value: Additional value carried in the call in ETH
        :param gas: The max amount of gas the coinbase account is allowed to pay for this transaction.
        :return: txid of the execution as hex string
        """

        assert isinstance(to_contract, Contract)

        if amount_in_eth:
            assert isinstance(amount_in_eth, Decimal)  # Don't let floats slip through
            value = to_wei(amount_in_eth)
        else:
            value = 0

        # Encode function arguments
        function_abi = to_contract._find_matching_fn_abi(func, args)
        # 4 byte function hash
        function_selector = function_abi_to_4byte_selector(function_abi)

        # data payload passed to the function
        arg_data = to_contract.encodeABI(func, args=args)

        call_data = function_selector + arg_data[2:]

        # test_event_execute() call data should look like
        # function selector + random int as 256-bit
        # 0x5093dc7d000000000000000000000000000000000000000000000000000000002a3f58fe

        # web3 takes bytes argument as actual bytes, not hex
        call_data = binascii.unhexlify(call_data[2:])

        tx_info = {
            # The Ethereum account that pays the gas for this operation
            "from": self.contract.web3.eth.coinbase,
            "gas": max_gas,
        }

        txid = self.contract.transact(tx_info).execute(to_contract.address, value, max_gas, call_data)
        return txid
開發者ID:websauna,項目名稱:websauna.wallet,代碼行數:51,代碼來源:wallet.py


注:本文中的web3.contract.Contract.encodeABI方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台,相關代碼片段篩選自各路編程大神貢獻的開源項目,源碼版權歸原作者所有,傳播和使用請參考對應項目的License;未經允許,請勿轉載。