面临问题，同时使用 re.compile python regex 创建列表

Question

I am trying to create a List with regex in a Python shell. In list I have 3 value topic-1, topic-2, topic-3. I am creating one consumer object which is having topic and topic should contains 3 values [topic1, topic2, topic3]. so Whenever I want to point any one from topic-1, topic-2, topic-3. so it should take a message from right topic. I am following below code but it's giving one issue:

import pulsar
import re

client = pulsar.Client('pulsar://localhost:6650')
topic = 'my-topic'
topic = ['topic-1', 'topic-2', 'topic-3']
topic = re.compile('topic-.*')
print(topic)
# <_sre.SRE_Pattern object at 0x7f13314e7210> 
consumer = client.subscribe(topic, "my-subscription")
2019-04-26 07:05:02.956 INFO  ConnectionPool:72 | Created connection for 
pulsar://localhost:6650
2019-04-26 07:05:02.957 INFO  ClientConnection:300 | [127.0.0.1:55874 -> 
127.0.0.1:6650] Connected to broker

Here I am able to create consumer object, But it's not creating with right value like [topic-1, topic-2, topic-3] because in next step I am not able to receive the message. What would be the syntax issue?

Answer 1

I can't find anything overtly wrong in your syntax. Are you sure you have those topics in your namespace? Try using pulsar's command line tools, eg:

pulsar-admin tenants list

pulsar-admin namespaces list <>

pulsar-admin topics list tenant/cluster/namespace

See here for more options: https://pulsar.apache.org/docs/latest/reference/CliTools/