How to start Freecad with Python 3 ?

[regis]

Hello all, i'm trying to find out how to to start my freecad with python3. I have python 2 and 3 installed by default on my system but every time it launches with python2. Looking for a way to launch freecad with the desired python. How to do that is what i've not been able to figure out.

[kkremitzki]

Depends on how you got the Python 3 version, if it's Debian Unstable do sudo update-alternatives --config freecad and pick the freecad-python3 option.

[wmayer]

Hello all, i'm trying to find out how to to start my freecad with python3. I have python 2 and 3 installed by default on my system but every time it launches with python2. Looking for a way to launch freecad with the desired python. How to do that is what i've not been able to figure out.

First of all you need a compiled FreeCAD version that linked against Python3. You cannot have a FreeCAD version linking against Python2 and then all sudden start it with Python3.

[regis]

Depends on how you got the Python 3 version, if it's Debian Unstable do sudo update-alternatives --config freecad and pick the freecad-python3 option.

the Python3 version came with the Linux Mint 19.1 by default
OS: Linux Mint 19.1
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.15860 (Git)
Build type: Release
Branch: master
Hash: 3b708c7f84b0425076b520e1d95627b20fd75fe0
Python version: 2.7.15rc1
Qt version: 5.9.5
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/Canada (en_CA)

Screenshot from 2019-02-17 06-03-49.png (95.38 KiB) Viewed 4329 times

First of all you need a compiled FreeCAD version that linked against Python3. You cannot have a FreeCAD version linking against Python2 and then all sudden start it with Python3.

is there a link to any tutorial on how to do that?

[wmayer]

Check the CompileOnUnix page in the wiki how to set up a build environment.
Once you run cmake check its output to see which Python version is used. If it still uses Py2 then change the PYTHON_EXECUTABLE variable to point to the Py3 version and rerun cmake.

[triplus]

If you don't want to compile FreeCAD yourself, you can try out AppImage:

https://github.com/FreeCAD/FreeCAD/releases/

Conda based one offers Py3/Qt5 build and PPA based one Py2/Qt4 build.

[NormandC]

the Python3 version came with the Linux Mint 19.1 by default

That's impossible. Linux Mint 19.1 is based on Ubuntu 18.04, which still comes with the obsolete 0.16.6712 version.

https://packages.ubuntu.com/bionic/freecad

You are most certainly using the freecad-daily PPA; it has not been switched to the update-alternatives version yet, it is still built with Python2 only.

Kurt ported his Debian work on his own PPA last month, but he hasn't updated the package since.

https://launchpad.net/~kkremitzki/+arch ... /+packages

Note that this package will conflict with the freecad_0.15.13541 package from the freecad-stable PPA.

[regis]

Check the CompileOnUnix page in the wiki how to set up a build environment.
Once you run cmake check its output to see which Python version is used. If it still uses Py2 then change the PYTHON_EXECUTABLE variable to point to the Py3 version and rerun cmake.

Thanks for now this doesn't make much sense.

If you don't want to compile FreeCAD yourself, you can try out AppImage:

https://github.com/FreeCAD/FreeCAD/releases/

Conda based one offers Py3/Qt5 build and PPA based one Py2/Qt4 build.

Indeed this worked, but does this appimage account for daily releases aswell?

[triplus]

Indeed this worked, but does this appimage account for daily releases aswell?

PPA based AppImage is in general considered to be a daily one indeed, Conda based AppImage is currently updated weekly (Monday).