title: How to specify ">" in redis-py
body: <p>I'm looking at this in the <a href="https://redis.io/topics/streams-intro" rel="nofollow noreferrer">redis stream documentation</a>, which says:</p>
  
  <blockquote>
    <p>It is time to try reading something using the consumer group:</p>
  
  <pre><code>&gt; XREADGROUP GROUP mygroup Alice COUNT 1 STREAMS mystream &gt;
  1) 1) "mystream"
     2) 1) 1) 1526569495631-0
           2) 1) "message"
              2) "apple"
  </code></pre>
    
    <p>XREADGROUP replies are just like XREAD replies. Note however the GROUP
      provided above, it states that I want to
    read from the stream using the consumer group mygroup and I'm the
    consumer Alice. Every time a consumer performs an operation with a
    consumer group, it must specify its name uniquely identifying this
    consumer inside the group.</p>
    
    <p>There is another very important detail in the command line above,
    after the mandatory STREAMS option the ID requested for the key
    mystream is the special ID >. This special ID is only valid in the
    context of consumer groups, and it means: messages never delivered to
    other consumers so far.</p>
  </blockquote>
  
  <p>I am trying to specify the ">" parameter in redis-py.</p>
  
  <p>When I look at the documentation <a href="https://redis-py.readthedocs.io/en/latest/_modules/redis/client.html#Redis.xreadgroup" rel="nofollow noreferrer">here</a>, I don't see any parameter in streams that seems to let me do this.  Specifically, I'm trying:</p>
  
  <pre><code>&gt;&gt;&gt; r.xreadgroup(mygroupname,myconsumer,{mystream : "&gt;"},1)
  [] # oh no, empty. WHY?!
  # 
  # even though
  &gt;&gt;&gt; r.xread({mystream: '1561950326849-0'}, count=1)
  [[b'stuff-returned-successfully.]]
  </code></pre>
  
  <p>What am I missing? Why can't I specify a ">" to indicate unseen messages?</p>