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  19 <b>LlenCommand: Contents
</b><br>  <a href=
"#LLEN _key_">LLEN _key_
</a><br>    <a href=
"#Return value">Return value
</a> 
  22                 <h1 class=
"wikiname">LlenCommand
</h1> 
  29                     #sidebar 
<a href=
"ListCommandsSidebar.html">ListCommandsSidebar
</a><h1><a name=
"LLEN _key_">LLEN _key_
</a></h1> 
  30 <i>Time complexity: O(
1)
</i><blockquote>Return the length of the list stored at the specified key. If thekey does not exist zero is returned (the same behaviour as forempty lists). If the value stored at 
<i>key
</i> is not a list an error is returned.
</blockquote> 
  31 <h2><a name=
"Return value">Return value
</a></h2><a href=
"ReplyTypes.html">Integer reply
</a>, specifically:
<br/><br/><pre class=
"codeblock python" name=
"code"> 
  32 The length of the list.