订阅循环中的异常：未配置订阅密钥答案

【问题标题】：Exception in subscribe loop: Subscribe key not configured订阅循环中的异常：未配置订阅密钥
【发布时间】：2020-08-15 20:34:40
【问题描述】：

有人可以帮我弄清楚为什么会出现这个异常吗？即使我配置了订阅密钥，但似乎没有。

这里是异常：“订阅循环中的异常：未配置订阅密钥重连策略已禁用，请手动处理重连。”

import time

from pubnub.pubnub import PubNub
from pubnub.pnconfiguration import PNConfiguration
from pubnub.callbacks import SubscribeCallback
from backend.blockchain.block import Block

pnconfig = PNConfiguration()
pnconfig.suscribe_key = 'sub-c-6d0fe192-dee4-11ea-9b19-...'
pnconfig.publish_key = 'pub-c-c3553c68-bf24-463c-ae43-...'

CHANNELS = {
'TEST': 'TEST',
'BLOCK': 'BLOCK'
}

class Listener(SubscribeCallback):
    def __init__(self, blockchain):
        self.blockchain = blockchain

        def message(self, pubnub, message_object):
            print('\n-- Channel: {message_object.channel} | Message: {message_object.message}')

            if message_object.channel == CHANNELS['BLOCK']:
                block = Block.from_json(message_object.message)
                potential_chain = self.blockchain.chain[:]
                potential_chain.append(block)

                try:
                    self.blockchain.replace_chain(potential_chain)
                    print('\n -- Successfully replaced the local chain')
                except Exception as e:
                    print('\n -- Did not replace chain: {e}')

class PubSub():
    """
    Handles the publish/subscribe layer of the application.
    Provides communication between the nodes of the blockchain network.
    """
    def __init__(self, blockchain):
        self.pubnub = PubNub(pnconfig)
        self.pubnub.subscribe().channels(CHANNELS.values()).execute()
        self.pubnub.add_listener(Listener(blockchain))

        def publish(self, channel, message):
            """
            Publish the message object to the channel.
            """
            self.pubnub.publish().channel(channel).message(message).sync()

        def broadcast_block(self, block):
            """
            Broadcast a block object to all nodes.
            """
            self.publish(CHANNELS['BLOCK'], block.to_json())

            def main():
                pubsub = PubSub()

                time.sleep(1)

                pubsub.publish(CHANNELS['TEST'], { 'foo': 'bar' })

                if __name__ == '__main__':
                    main()

【问题讨论】：

我在运行您的代码时遇到了一些问题，但在您的问题中重新格式化/缩进和更新，以便复制/粘贴您的代码不会出错。
但我不知道要为backend.blockchain.block 安装什么，所以我无法测试运行。但是您提到了重新连接问题。您的脚本是否成功运行一段时间后（断开连接后？）您是否收到此错误？
没有克雷格，它根本没有运行

标签： python publish-subscribe pubnub

【解决方案1】：

我无法收到错误“订阅循环中的异常：订阅密钥未配置重新连接策略已禁用，请手动处理重新连接。”。

我使用了代码块：

pnconfig = PNConfiguration()
pnconfig.subscribe_key = "my_subkey"
pnconfig.publish_key = "my_pubkey"
pnconfig.ssl = True
pnconfig.uuid = "my_custom_uuid"
pnconfig.reconnect_policy = "LINEAR"
pubnub = PubNub(pnconfig)

来自页面：https://www.pubnub.com/docs/python/api-reference-configuration 并补充说：

PNReconnectionPolicy.NONE

来自页面：https://www.pubnub.com/docs/python/api-reference-configuration

【讨论】：