web3py ABIFunctionNotFound

Question

我是web3开发的新手，当我试图在BSC网络上通过contract.functions.transfer()函数为USDC令牌创建传输时，我尝试在web3py上签署事务，并得到了一个异常ABIFunctionNotFound。

web3.exceptions.ABIFunctionNotFound: ("The function 'transfer' was not found in this contract's abi. ", 'Are you sure you provided the correct contract abi?')

令牌ABI

[{"inputs":[{"internalType":"address","name":"logic","type":"address"},{"internalType":"address","name":"admin","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newAdmin","type":"address"}],"name":"changeAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]

如果在此联系人中没有功能转移，如何将USDC转移到另一个钱包？

Answer 1

正如我在评论中所猜测的，您正在传递代理合同的ABI。

解决方案很简单:传递执行合同的ABI (您可以看到它从BSCScan上的代理合同中链接)，但保留代理地址。

如果您下次遇到此问题，则此规则适用于所有其他代理合同。始终传递代理地址和实现ABI。