Softimage: list input/output connections

listConnections.py

import xml.etree.ElementTree as ET
from win32com.client import Dispatch
si = Dispatch("XSI.Application")
siut = Dispatch("XSI.Utils")


def listConnections(obj, conn_type="out"):
    data = siut.DataRepository.GetConnectionStackInfo(obj)
    return [c.find("object").text for c in ET.fromstring(data)
            if c.find("object") is not None and c.find("type").text == conn_type]

# TEST
si.NewScene(None, False)
a = si.ActiveSceneRoot.AddNull()
b = si.ActiveSceneRoot.AddNull()
b.posx.Value = 5
a.Parameters("Size").AddExpression(b.Parameters("Size").FullName)

print a.FullName, listConnection(a.ActivePrimitive, "in")
print b.FullName, listConnections(b.ActivePrimitive, "out")