web3py 调用的合约函数没有错误但没有效果（ganache 本地网络）

Question

通过 py-solc-x 编译代码，然后使用 web3py api 将其部署到 ganache 本地网络。首先，调用 get_balance 函数并按预期调用 return 。第二，调用传递函数，它 return 没有错误，但是当我稍后调用 get_balance 时余额没有改变。尝试通过发送原始交易来调用转账，但仍然没有效果...

metacoin.sol（由 truffle 文档提供）

pragma solidity ^0.8.0;

contract MetaCoin {

    mapping (address => uint) balances;

    event Transfer(address indexed _from, address indexed _to, uint _value);    

    constructor() public {
        balances[msg.sender] = 10000;
    }

    function transfer(address receiver, uint amount) public returns(bool sufficient) {
        if (balances[msg.sender] >= amount)
            return false;

        balances[msg.sender] -= amount;
        balances[receiver] += amount;
        emit Transfer(msg.sender, receiver, amount);   
        return true;
    }

    function get_balance(address account) public view returns(uint) {
        return balances[account];
    }
}

interacting.py

    # deploy contract by w3.eth.accounts[0]
    # the balance of the accounts[0] is 10000 (call get_balance() return 10000)
    # then transfer 1000 from accounts[0] to accounts[1]

    deployed_address = '0x538574C591F6e01E22eFa951153a29e6Fc505735'
    contract = w3.eth.contract(address=HexBytes(deployed_address), abi=abi)
    tx_hash = contract.functions.transfer(w3.eth.accounts[1], 1000).transact()
    tx_receipt = w3.eth.wait_for_transaction_receipt(tx_hash)
    print(tx_receipt.contractAddress)

    balance = contract.functions.get_balance(w3.eth.accounts[0]).call()
    print(balance)    
    # still 10000, expect 9000.

转账交易看起来不错。 gas/gasPrice和动态手续费交易都试过了，余额还是一样。这是 ganache 本地网络设置的问题吗？或者我错过了一些必需的配置步骤。

Answer 1

检查交易是否完成

assert tx_receipt.status == 1

此外，如果 Ganache 不起作用，请尝试 Ethereum Tester based tests. Example token tests here。

web3py 调用的合约函数没有错误但没有效果（ganache 本地网络）

contract function invoked by web3py without error but have no effect (ganache local network)

ethereum

solidity

smartcontracts

ganache

web3py