Help Importing 64-bit DLLs (Python)

[haev]

Hey everyone, novice here.

I was able to get live tracking data into Python without much trouble using the help of a tutorial - yay! However, I'm running into issues now that I'm trying to run this as an Autodesk Fusion 360 Add-in.

My understanding is that Fusion's Python interpreter is running 64-bit only. After some troubleshooting, I took all of the DLL's from the x64 folder (all files from the newly released Orion SDK), including the msvcp DLLs and have them in a "packages" subfolder.

However, I'm getting this error:

>>> Traceback (most recent call last):
      File "C:/Users/username/AppData/Roaming/Autodesk/Autodesk Fusion 360/API/AddIns/LeapCAD/LeapCAD.py", line 2, in <module>
        from .packages import Leap
      File "C:/Users/username/AppData/Roaming/Autodesk/Autodesk Fusion 360/API/AddIns/LeapCAD\packages\Leap.py", line 28, in <module>
        LeapPython = swig_import_helper()
      File "C:/Users/username/AppData/Roaming/Autodesk/Autodesk Fusion 360/API/AddIns/LeapCAD\packages\Leap.py", line 24, in swig_import_helper
        _mod = imp.load_module('LeapPython', fp, pathname, description)
      File "C:\Users\username\AppData\Local\Autodesk\webdeploy\production\66ed5e8cf991ec00ace7e4d2638113959b38c0dd\Python\lib\imp.py", line 188, in load_module
        return load_dynamic(name, filename, file)
    ImportError: DLL load failed: The specified module could not be found.

And here is the import code in my .py:

import sys, adsk.core, adsk.fusion, adsk.cam, traceback
from .packages import Leap
from Leap import CircleGesture, KeyTapGesture, ScreenTapGesture, SwipeGesture

I've been trying to figure this out for a day or two now. I used Dependency Walker to ensure that all my DLL's needed are there. Looking at the error output, it seems like it can't find LeapPython, which is in the "packages" folder I created, as LeapPython.pyd.

Any help or ideas would be appreciated!

[Joe_Ward]

Which version of Python does Autodesk Fusion support?

[haev]

Fusion 360 uses Python 3.3.5

Edit: could it maybe be a PATH issue? Fusion is running the addins from a Python interpreter packaged in its installed files, which might conflict with the set path variable pointing to my standalone Python installation.

[Joe_Ward]

The Leap Motion libraries that are part of the SDK only support Python 2.7 -- this is most likely the problem, and certainly would become the problem once you fixed any possible path issues.

We don't support Python 3 directly, but you should be able to compile a version that does yourself.

[haev]

Thanks for the info, I'll give that a shot.

[haev]

So, after a ton of fiddling I finally got it to work (sort of). Except now every time I go to debug, it crashes Fusion 360 instantly.

As for the resolution, I went and downloaded Python 3.3.5, and followed your instructions, while modifying it for an 64 bit build to generate the .pyd file.

I guess I'm off to Autodesk's forums now.

[rajpalaakash26]

Hey Could you share the .pyd file for Python 3.3.5 Please. I am unable to make it work

[captain_hiro]

I tried to compile it in Python 3.6, 64-bits Windows10, but I could not succeed.
Could you support and give it us in the LeapMotion Home page ?

[avpai]

Same here @captain_hiro - I tried for python 3.6 windows 10 64 bit. I tried these steps

Leap Motion and Python 3.6 with windows 10 64 bit

any suggestions/ideas?