Cannot use with python3

[gnthibault]

Dear developer,

Thank you for this nice project. I must admit that, although I have been struggling a lot in the past for compiling C++ projects with lots of dependencies, I felts even worse to try to compile Freecad and Pivy with QT5 and python3.

I thought I found the graal when I discovered this github, but I may be wrong, (please correct me in this case)

I tried to create a conda env with freecad and python 3.4:

conda create -n freecad freecad python=3.4
Solving environment: failed

UnsatisfiableError: The following specifications were found to be in conflict:
  - freecad -> netgen -> python=2.7
  - python=3.4
Use "conda info <package>" to see the dependencies for each package.

What can I do to correct for this ? I tried previously without specifying the python version, but I ended up with an error in a Pivy call that complained about missing Pyside.

Then my attempt at pip install Pyside resulted in an error because Pyside is not compatible with my python version, which is 3.6.

[looooo]

the only supported version of python is 3.6! I won't support any older version. building for 3 plattforms is alteady way too much work. so removing the python constraint should solve the issue.

Versionen, but I ended up with an error in a Pivy call that complained about missing Pyside.

can you explain?

[gnthibault]

Yes sorry, here is my workflow:

conda create -n freecad freecad netgen=6.2.1804=py36_0 [everything works like a charm]

Then I try to run my software: (freecad):~/projects/freecadScope$ python ./SimulatorGui.py Traceback (most recent call last): File "./SimulatorGui.py", line 32, in from pivy.quarter import QuarterWidget File "/home/user/anaconda3/envs/freecad/lib/python3.6/site-packages/pivy/quarter/init.py", line 17, in from . import QuarterWidget File "/home/user/anaconda3/envs/freecad/lib/python3.6/site-packages/pivy/quarter/QuarterWidget.py", line 113, in from PySide import QtCore, QtGui, QtOpenGL ModuleNotFoundError: No module named 'PySide' (freecad) :~/projects/freecadScope$ which pip /home/user/anaconda3/envs/freecad/bin/pip (freecad) :~/projects/freecadScope$ pip install pyside Collecting pyside Using cached https://files.pythonhosted.org/packages/36/ac/ca31db6f2225844d37a41b10615c3d371587677efd074db29855e7035de6/PySide-1.2.4.tar.gz Complete output from command python setup.py egg_info: only these python versions are supported: [(2, 6), (2, 7), (3, 2), (3, 3), (3, 4)]

[gnthibault]

I think I should find a way of using this version of Pivy: https://github.com/FreeCAD/pivy/tree/master/pivy Instead of the one featured in the conda env, no ? is it easy to do ?

EDIT: It looks like conda install pivy=0.6.4b2 solved my problem. However now I get:

python -c "import freecad" Traceback (most recent call last): File "", line 1, in ModuleNotFoundError: No module named 'freecad'

I need to write code that makes use of freecad.Vector for instance, how should I do ? Edit2: as a workaroud, I did something like this:

FREECADPATH = '/home/user/anaconda3/envs/freecad/lib/'
sys.path.append(FREECADPATH)

then import FreeCAD.

I don't know if this is the regular way of importing FreeCAD though

[looooo]

EDIT: It looks like conda install pivy=0.6.4b2 solved my problem.

Yes you did it the right way. I now disabled all pivy packages from the freecad-channel, so pivy should be pulled automatically from the conda-forge. This will pull the same package as you have installed with specifying the version.

Edit2: as a workaroud, I did something like this: FREECADPATH = '/home/user/anaconda3/envs/freecad/lib/' sys.path.append(FREECADPATH)

You can use multiple versions of FreeCAD in one environment. This is done for example in ubuntu where you can install daily-builds and version x.y side by side. This is only possible without adding the package to the python-path directly. Therefor you have to manipulate the path before FreeCAD gets importable.

You can also use some conda-env-variables:

import os, sys
sys.path.append(`os.path.join(os.environ["CONDA_PREFIX"], "lib")

Multiple versions of freecad in one conda-env doesn't make sense at all. I already thought about adding a meta-package which handles the path-problem in a more pythonic way...

[gnthibault]

Thank you very much for your help, and the work you have done maintaining FreeCAD and its related tool. Without your work I would probably not have been able to use FreeCAD scripting capability at all.

[selvakarna]

So , which version Support FreeCAD?

can you share clear link to install FreeCAD in Python3.6