Rhino.Geometry.Intersect.Intersection Nested Import broken in Py3 GH

Scripting
,
1

@eirannejad

The following import works in the old python scripting component, but breaks in the python3 component.

from Rhino.Geometry.Intersect.Intersection import BrepBrep, BrepPlane

This does not throw an error, but when referenced via the help function prints a ‘MethodBinding’
import Rhino
print(help(Rhino.Geometry.Intersect.Intersection.BrepBrep))

ImportInPython3.gh (9.3 KB)

bcWcL09N1h
bcWcL09N1h2537×954 282 KB

2

@ChristopherConnock,

Rhino.Geometry.Intersect.Intersection is a class, not a namespace.

Try this instead:

#! python 3
from Rhino.Geometry.Intersect import Intersection

– Dale

1 Like
3

Thanks Dale.

That worked, but I guess I am wondering why namespace.class syntax worked in py 2, but not py3 - is this a change in what python 3 allows or a difference in the scripting component?

These (both class imports) worked in the old component:

#! python 2
from Rhino.Geometry.Intersect.Intersection import BrepBrep, BrepPlane
from Rhino.Geometry.Transform import Translation
4

@ChristopherConnock The import mechanism in Python 3 is much more complicated than python 2. It basically requires all the names immediately in front of the import keyword to be python modules. So:

  • import os.path works because both os and path are modules
  • import math.pi does not work since pi is a type inside math module and is not a module itself. Python 3 would throw an error like this
    Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'math.pi'; 'math' is not a package

More Info:

1 Like