获取event_loop.run_until_complete（）方法

Question

我有一个代码在一个循环中运行，用Python3.6编写。在循环内部，我通过web3.py获取数据。我想异步处理该数据。我用过asyncio。这是我的代码：

web3 = Web3(HTTPProvider(cfg.eth_node_url))
web3_pending_filter = web3.eth.filter('pending')
event_loop = asyncio.get_event_loop()
taskLock = Lock()
tasks = []

def main():
    thread = threading.Thread(target=start_event_loop)
    thread.start()

    while True:
       process_pending_trx(web3, web3_pending_filter)
       time.sleep(0.001)           


def start_event_loop():
    while True:
        buf = []
        with taskLock:
            for task in tasks:
                buf.append(task)
            tasks = []

        if len(buf) > 0:
            event_loop.run_until_complete(buf)

        time.sleep(0.0001)


def process_pending_trx(web3, web3_filter):
    print('Scanning for new pending transactions...')

    transaction_list = web3.eth.getFilterChanges(web3_filter.filter_id)
    print(len(transaction_list))

    for trx_hash in transaction_list:
        with taskLock:
            tasks.append(process_pending_transaction(web3, trx_hash))


async def process_pending_transaction(web3, trx_hash):
    print(trx_hash)
    trx = web3.eth.getTransaction(trx_hash)  
    ...
    await asyncio.sleep(0)

start_event_loop 行

的方法

  

event_loop.run_until_complete（BUF）   我收到错误：“asyncio.Future，coroutine或awaitable is required”

出现此错误的原因可能是什么？或者我如何异步运行 process_pending_transaction 方法？也许还有其他一些方法。