Python3 version of X-PSI! [WIP, do not merge!]

[dhuppenkothen]

Here's a Python3 version of X-PSI. I've been running it on python 3.9, with the latest versions of the relevant libraries supplied by conda, and installed it following the X-PSI installation instructions.

The modeling notebook seems to run without errors, but of course, I can't be 100% sure that there aren't still bugs in there. I think it's ready for some testing by someone who knows more about X-PSI than me and uses it for a wider range of purposes. So please go ahead, and report any weirdnesses and bugs you might run into!

[dhuppenkothen]

Current Conda environment file I've been using for development:
xpsi_py3_specfile.txt

[thjsal]

Looks like the latest merge with current X-PSI code caused an indentation problem in line 67 of _postprocessor.py. There seems to be line which is intended using tab instead of spaces, and apparently Python2 did not complain about that.

  File "/home/tuomo/anaconda2/envs/xpsi_py3/lib/python3.10/site-packages/xpsi-0.7.12-py3.10-linux-x86_64.egg/xpsi/PostProcessing/_postprocessor.py", line 67
    self.samples={}
TabError: inconsistent use of tabs and spaces in indentation

By the way, I am here using still anaconda2, since it seems it can be also used to create Python3 environment. Or is there a reason to change to anaconda3?

[dhuppenkothen]

Closing this to open a new PR from the dhuppenk_py3 branch within the XPSI repo itself rather than the fork.