import indent
import cElementTree as ET

def test(xml):
    """
    >>> test("<a>text</a>")
    <a>text</a>

    >>> test("<a><b>text</b></a>")
    <a>
      <b>text</b>
    </a>

    >>> test("<a><b>text</b><c>text</c><d><e>text</e></d></a>")
    <a>
      <b>text</b>
      <c>text</c>
      <d>
        <e>text</e>
      </d>
    </a>

    """
    xml = ET.XML(xml)
    indent.indent(xml)
    print ET.tostring(xml).rstrip()

if __name__ == "__main__":
    import doctest
    failed, tested = doctest.testmod(__import__(__name__))
    print tested - failed, "tests ok."