From xml data to python code to run

[Fredrik Lundh]

ralfbrand50 at gmail.com wrote:

> Is it possible to run data that's from an xml file as python code, by
> this I mean the following.
>
> In a xml file there's the following data
>
> <code><![CDATA[self.wTree.signal_autoconnect(dic)]]></code>
>
> Now I want to extract the self.wTree.signal_autoconnect(dic)* from the
> xml file and make it possible that Python runs this, instead of having
> a python file were with the hardcoded self.wTre.. in it.

from elementtree import ElementTree as ET

text = """<doc><code><![CDATA[object.method('hello')]]></code></doc>"""

doc = ET.fromstring(text)

class Object:
    def method(self, value):
        print value

# populate the namespace
namespace = {
    "object": Object()
    }

# execute all code fragments
for code_elem in doc.findall(".//code"):
    exec code_elem.text in namespace

</F>