#197 Heads-up: async is a keyword in Python 3.7

[Christoph Gohlke]

async is a keyword in Python 3.7 and can not be used as an argument name. See https://www.python.org/dev/peps/pep-0492/#deprecation-plans.

Using Python 3.7.0a3:

X:\Python37>python.exe -m pymol
Error: unable to initalize the pymol.cmd module
Traceback (most recent call last):
  File "X:\Python37\lib\site-packages\pymol\cmd.py", line 226, in <module>
    from . import editor
  File "X:\Python37\lib\site-packages\pymol\editor.py", line 406
    dir=1,hydro=-1,ss=0,async=-1,quiet=1,_self=cmd):
                            ^
SyntaxError: invalid syntax

[Thomas Holder]

Thanks Christoph!

[Thomas Holder]

fixed in rev 4184.

Renamed all async variables to async_ (trailing underscore). Backwards compatibility of function keyword arguments is handled with **kwargs.

[Christoph Gohlke]

Works for me. Thank you.