Hey there, let's break down exactly why this error is popping up for you—it all boils down to version compatibility between Redis and the redis-py client:

• Redis Streams didn't exist when your redis-py version was built
  The XADD command (which the xadd() method wraps) is part of Redis Streams, a feature that wasn't introduced until Redis 5.0. Your redis-py 2.10.5 is an older release that predates the addition of Streams support entirely.

• redis-py added xadd() support in version 3.0.0
  The xadd() method wasn't included in the redis-py client until the 3.0.0 update. Any version before that (like your 2.10.5) simply doesn't have this method implemented in its codebase.

Quick Steps to Fix This: #

1. Upgrade redis-py to 3.x or newer
   Run this command to get a version that supports Streams:

   pip install --upgrade redis>=3.0.0
   

2. Verify your Redis server version is at least 5.0
   Even with an updated client, your Redis server needs to support Streams to use xadd(). Check your server version with:

   redis-server --version
   

内容的提问来源于stack exchange，提问作者user2757185