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我正在尝试调用路由器合约的 swapExactTokensForTokens，我需要将 tokenA 交换为 tokenB。这是交易的代码：

router = '0x0000000'
abi = '[{"inputs":[{"internalType":"address","name":"_factory","type":"address"},.... {"stateMutability":"payable","type":"receive"}]'

router_contract = w3.eth.contract(router, abi=abi)

tokenA = '0x000...'
tokenB = '0x000...'

path = [tokenA, tokenB]


txn = router_contract.functions.swapExactTokensForTokens(amount, min_amount, path, personal_wallet, (int(time()) +1000) ).buildTransaction({
        'gas': 81000,
        'gasPrice': w3.toWei('10', 'gwei'),
        'nonce':  w3.eth.get_transaction_count(personal_wallet),
    })

我在交易中收到以下错误：

交易截图

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1 回答 1

2

更新：

上面的代码在增加气体并from在buildTransaction.

于 2021-02-28T21:44:54.133 回答