Listing all the modules/subpackages in the NXOpen package

Question

I am trying to follow this post, to list all the modules in the NX Open package:

import NXOpen
import pkgutil
the_string = ""
package = NXOpen
for importer, modname, ispkg in pkgutil.iter_modules(package.__path__):
 the_string = the_string + modname + "\n"
lw = NXOpen.Session.GetSession().ListingWindow
lw.Open()
lw.WriteFullline(the_string)
lw.Close()

but I get the below error message:

pkgutil.py, line 123, in iter_modules raise ValueError("path must be None or list of path to look for")

What is the problem and how can I resolve it?

P.S. 1. I checked the NXOpen.__path__ attribute. It is a string type property with a value of NXOpenPackagePath!

P.S. 2. I asked a follow up question, here on the SIEMENS PLM forum.

P.S.3. I also tried the

import os
from pathlib import Path
for importer, modname, ispkg in pkgutil.iter_modules(Path(os.path.dirname(NXOpen.__file__))):

from here and here, but now I get the error:

TypeError: 'WindowsPath' object is not iterable

Answer 1

Judging by the source code of iter_modules, it expects list argument, while you pass a Path object.

Please, try just pkgutil.iter_modules([os.path.dirname(NXOpen.__file__)]).

• Foad S. Farimani: I had already tried that. I get the same ValueError: path must be None or list of paths to look for modules in
• Mikhail Gerasimov: @Foad I've edited the answer. Kindly try pkgutil.iter_modules([os.path.dirname(NXOpen.__file__)])
• Foad S. Farimani: strangely enough, adding the square brackets [...] helped!