eth | KeyError:baseFeePerGas

这是新版本 web3.py 导致的问题。

之前我们可以这样

tx_dic = test_contract_obj.functions.swapCoin(
        routers,
        tokenContracts,
        receiveAddress,
        receiveAmount,
        one_router
    ). \
        buildTransaction(
        {
            'gas': 500000,
        }
    )

但是，在新版本的 web3.py 中，这样会导致错误。

Traceback (most recent call last):
  File "/Users/licong/python/Rhino/Rhino-Script/RhinoScript/RhinoGateway/Other/EVMSwapSol/SwapCoin.py", line 44, in <module>
    print(swap_coin(routers, tokenContracts, receiveAddress, receiveAmount, one_router))
  File "/Users/licong/python/Rhino/Rhino-Script/RhinoScript/RhinoGateway/Other/EVMSwapSol/SwapCoin.py", line 7, in swap_coin
    tx_dic = test_contract_obj.functions.swapCoin(
  File "/Users/licong/anaconda3/envs/py3.9/lib/python3.9/site-packages/web3/_utils/decorators.py", line 51, in wrapper
    return to_wrap(*args, **kwargs)
  File "/Users/licong/anaconda3/envs/py3.9/lib/python3.9/site-packages/web3/contract.py", line 1112, in buildTransaction
    return self.build_transaction(transaction)
  File "/Users/licong/anaconda3/envs/py3.9/lib/python3.9/site-packages/web3/contract.py", line 1099, in build_transaction
    return build_transaction_for_function(
  File "/Users/licong/anaconda3/envs/py3.9/lib/python3.9/site-packages/web3/contract.py", line 1672, in build_transaction_for_function
    prepared_transaction = fill_transaction_defaults(web3, prepared_transaction)
  File "cytoolz/functoolz.pyx", line 249, in cytoolz.functoolz.curry.__call__
  File "/Users/licong/anaconda3/envs/py3.9/lib/python3.9/site-packages/web3/_utils/transactions.py", line 114, in fill_transaction_defaults
    default_val = default_getter(web3, transaction)
  File "/Users/licong/anaconda3/envs/py3.9/lib/python3.9/site-packages/web3/_utils/transactions.py", line 64, in <lambda>
    web3.eth.max_priority_fee + (2 * web3.eth.get_block('latest')['baseFeePerGas'])
  File "/Users/licong/anaconda3/envs/py3.9/lib/python3.9/site-packages/web3/datastructures.py", line 51, in __getitem__
    return self.__dict__[key]  # type: ignore
KeyError: 'baseFeePerGas'

应该这样使用

tx_dic = test_contract_obj.functions.swapCoin(
    routers,
    tokenContracts,
    receiveAddress,
    receiveAmount,
    one_router
). \
    buildTransaction(
    {
        'gas': 500000,
        'gasPrice': test_w3.eth.gasPrice,
    }
)