python2/3 compatibility, PySide/PySide2 PyQt4/PyQt5 compatibility, unicode_literals, setup.py

[willjp]

Changes:

2x New Dependencies:

• six python2/3 compatibility module
• Qt.py Pyside(Qt4)/PySide2(Qt5) compatibility module

  print to print()

  python3-style relative imports

from .module import func

filter() to list-comprehension

I replaced your use of filter() with list-comprehensions. In python2 filter() returned a list, in python3 it returns an iterable. The output was being treated as lists in the code, so I kept them that way.

QApplication reused in tests if Maya, IPython, etc...

Minimal setup.py

[drogenlied]

Python2 sort of works now and I found a few problems while testing:

• PySide: dragging view with middle mouse button does not work, no error
• PyQt4: AttributeError on every mouse click
• PyQt5: AttributeError on startup due to missing QPainter.drawRoundRect

Python3 works correctly so far and I can't test PySide2 on either version right now.

[phtaylor]

Awesome. Thanks a lot!

[phtaylor]

Oops, I think I'll need to revert this merge in favor of the other branch. I'll fix it.

[phtaylor]

This merge has now been reverted.