XML scanning for value

I have an XML with the following structure that I'm getting from an API -

<entry>
    <id>2397</id>
    <title>action_alert</title>
    <tes:actions>
        <tes:name>action_alert</tes:name>
        <tes:type>2</tes:type>
    </tes:actions>
</entry>

I am scanning for the ID by doing the following -

sourceobject = etree.parse(urllib2.urlopen(fullsourceurl))
source_id = sourceobject.xpath('//id/text()')[0]

I also want to get the tes:type

source_type = sourceobject.xpath('//tes:actions/tes:type/text()')[0]

Doesn't work. It gives the following error -

lxml.etree.XPathEvalError: Undefined namespace prefix

How do I get it to ignore the namespace?

Alternatively, I know the namespace which is this -

<tes:action xmlns:tes="http://ift.tt/1CdnEMZ">