title: How to insert a child subelement in Python ElementTree
body: <p>My xml :-</p>
  
  <pre><code>&lt;users&gt;
  &lt;/users&gt;
  </code></pre>
  
  <p>i need to just append a child element :-</p>
  
  <pre><code>&lt;users&gt;
  &lt;user name="blabla" age="blabla" &gt;&lt;group&gt;blabla&lt;/group&gt;
  &lt;/users&gt;
  </code></pre>
  
  <p>My code giving some error :(</p>
  
  <pre><code>import xml.etree.ElementTree as ET
  doc = ET.parse("users.xml")
  root_node = doc.find("users")
  child = ET.SubElement(root_node, "user")
  child.set("username","srquery")
  group  = ET.SubElement(child,"group")
  group.text = "fresher"
  tree = ET.ElementTree(root_node)
  tree.write("users.xml")
  </code></pre>
  
  <p>I missed out "append" , but i don't have idea where to add that. Thanks in advance.</p>