Python build_populus_meta示例

示例#1

文件： utils.py 项目： US-Bitcoin-Bank-and-Exchange/smart-contracts.USpool.org

def get_contract_by_name(chain: BaseChain,
                         name: str) -> web3.contract.Contract:
    """Get web3.Contract class by its name.

    Sanity wrapper over everchanging Populus ABI.
    """

    contract_data = chain.provider.get_contract_data(name)

    # There's a bug in populus where bytecode and bytecode-runtime can't be linked.
    # These fields are not needed during interaction with a smart contract,
    # so they can be ignored
    contract_factory_fields = filter(
        lambda x: x not in CONTRACT_FIELDS_TO_REMOVE, CONTRACT_FACTORY_FIELDS)

    factory_kwargs = {
        key: contract_data[key]
        for key in contract_factory_fields if key in contract_data
    }

    populus_meta = build_populus_meta(chain, contract_data)
    Contract = chain.web3.eth.contract(
        ContractFactoryClass=PopulusContract,
        populus_meta=populus_meta,
        **factory_kwargs,
    )

    return Contract

示例#2

def get_contract_by_name(chain: BaseChain,
                         name: str) -> web3.contract.Contract:
    """Get web3.Contract class by its name.

    Sanity wrapper over everchanging Populus ABI.
    """

    contract_data = chain.provider.get_contract_data(name)

    factory_kwargs = {
        key: contract_data[key]
        for key in CONTRACT_FACTORY_FIELDS if key in contract_data
    }

    populus_meta = build_populus_meta(chain, contract_data)
    Contract = chain.web3.eth.contract(
        ContractFactoryClass=PopulusContract,
        populus_meta=populus_meta,
        **factory_kwargs,
    )

    return Contract

示例#3

文件： utils.py 项目： minibitsdice/minibitsdice.github.io

def get_contract_by_name(chain: BaseChain, name: str) -> web3.contract.Contract:
    """Get web3.Contract class by its name.

    Sanity wrapper over everchanging Populus ABI.
    """

    contract_data = chain.provider.get_contract_data(name)

    factory_kwargs = {
        key: contract_data[key]
        for key
        in CONTRACT_FACTORY_FIELDS
        if key in contract_data
    }

    populus_meta = build_populus_meta(chain, contract_data)
    Contract = chain.web3.eth.contract(
        ContractFactoryClass=PopulusContract,
        populus_meta=populus_meta,
        **factory_kwargs,
    )

    return Contract