title: How to find the Python library's ONVIF version?
body: <p>I am using the <a href="https://github.com/FalkTannhaeuser/python-onvif-zeep" rel="nofollow noreferrer">python-onvif-zeep</a> library to connect to a PTZ camera.</p>
  <p><strong>How can I find out what ONVIF version the library implements?</strong></p>
  <p>I looked at the <a href="https://github.com/FalkTannhaeuser/python-onvif-zeep/tree/zeep/wsdl" rel="nofollow noreferrer">library's WSDL files</a> and they mention both ver20 and ver10 (e.g., <a href="https://github.com/FalkTannhaeuser/python-onvif-zeep/blob/zeep/wsdl/devicemgmt.wsdl" rel="nofollow noreferrer">devicemgmt.wsdl</a>), so I don't know for sure what it actually implements. The library description makes a reference to <a href="http://www.onvif.org/onvif/ver20/util/operationIndex.html" rel="nofollow noreferrer">ver20</a>, but I see many mentions of ver10 in the WSDL files (only one mention of ver20 per file) so I am not sure.</p>