NameError: name 'hou' is not defined

[art3mis]

Can any Python experts tell me why I get

Quote

  File "hou.session", line 9, in <module>
NameError: name 'hou' is not defined

with the following script entered in the Python Source Editor?

def set_opencl(parent_node, parm_value):
    for node in parent_node.allSubChildren():
        for p in node.parms():
            if p.name()=='opencl':
                try:
                    p.set(parm_value)
                except hou.PermissionError: #this handles the case that the parm is inside of a locked .otl
                    pass
hou.session.set_opencl(hou.node('/obj/sim'),1);

Houdini 16.0.597 Indie in Linux

Edited May 18, 2017 by art3mis

[jkunz07]

The last line shouldn't go into the session module.  You should type it into a python shell to use that function from the session module.

It also shouldn't have a semicolon at the end.

[Stalkerx777]

 That is a long-standing "bug", if you didn't put import hou  in hou.session module, it will work until first error (any python exception), once you get an error, hou module gets lost for some reason. So, just always do import hou.

 

Edited May 22, 2017 by Stalkerx777