2-3-Compatibility of Python Code

[vvolkl]

BEGINRELEASENOTES

• Fixes in python code for 2-3 compatibility

ENDRELEASENOTES

[petricm]

Please check the gihub actions for python, you still have several problems

[petricm]

Also it would be good to install the python stuff under lib[64]/python${Python_VERSION_MAJOR}.${Python_VERSION_MINOR}/site-packages

[vvolkl]

Also it would be good to install the python stuff under lib[64]/python${Python_VERSION_MAJOR}.${Python_VERSION_MINOR}/site-packages

Agreed, as there are actually a few issues to fix with the python code organization. I'd propose I do it in a separate PR.

[andresailer]

Thanks for quickly taking care of this.
Not sure if this was using an automated tool or by hand?

I think we don't have to use six either otherwise we should ship it to make sure it exists, and I made proposals inline to that effect, though maybe I missed some cases.
Also some other proposals to do change some code for niceness

[andresailer]

Looks good to me

[petricm]

You still did not resolved 2 vs 4 indent or what are we doing about this?

[petricm]

E402 what if you just flag the lines of ROOT as false positives

[vvolkl]

Done!

[vvolkl]

@petricm good point, I just switched everything to 4 spaces now.

[vvolkl]

As discussed in the EDM4hep meeting, I changed this to 2 spaces indent. @gaede should be good to merge now!