title: How to use sadd with multiple elements in Redis using Python API?
body: <p>Please consider the following example</p>
  
  <pre><code>&gt;&gt;import redis
  &gt;&gt;redis_db_url = '127.0.0.1'
  &gt;&gt;r = redis.StrictRedis(host = redis_db_url,port = 6379,db = 0)
  &gt;&gt;r.sadd('a',1)
  &gt;&gt;r.sadd('a',2)
  &gt;&gt;r.sadd('a',3)
  &gt;&gt;r.smembers('a')
  </code></pre>
  
  <p>[+] output: set(['1', '3', '2'])</p>
  
  <pre><code>&gt;&gt;r.sadd('a',set([3,4]))
  &gt;&gt;r.smembers('a')
  </code></pre>
  
  <p>[+] output: set(['1', '3', '2', 'set([3, 4])'])</p>
  
  <pre><code> &gt;&gt;r.sadd('a',[3,4])
   &gt;&gt;r.smember('a')
  </code></pre>
  
  <p>[+] set(['1', '[3, 4]', '3', '2', 'set([3, 4])'])</p>
  
  <p>According to the official documentation in <a href="https://redis-py.readthedocs.org/en/latest/" rel="noreferrer">https://redis-py.readthedocs.org/en/latest/</a>
      sadd(name, *values)
      Add value(s) to set name</p>
  
  <p>So is it a bug or I am missing something ?</p>