Here's what I'm currently using. It seems to work so far. Looking through
the PyMol binary I see about 50 possible names though, so it would be nice
if there were a built-in way to detect X11.
def hasTk():
""" Make an educated guess as to whether Tk is installed,
hopefully without triggering any installation on Macs
"""
hasTk = True
if sys.platform=="darwin": #Mac
# Hack: check the path for entries containing 'X11'
hasTk = any([ "X11" in p.upper() for p in sys.path])
if hasTk:
try:
import Tkinter
except ImportError:
hasTk = False
return hasTk
On Mon, Apr 14, 2014 at 10:46 AM, Spencer Bliven <sbli...@ucsd.edu> wrote:
> I'm working on a plugin with a command line interface and a light-weight
> tk interface through the plugins menu. This works fine on Linux, Windows,
> and open-source Mac builds, but not on MacPyMol.app. Importing Tkinter
> causes PyMol to quit with a prompt to install X11 (but not an ImportError,
> as far as I can tell). If X11 is installed there are no errors, but there
> is not a plugins menu, so I'd rather not bother loading and initializing
> the Tk interface to the plugin.
>
> How can I detect whether Tk is available?
>
> I can think of two approaches, but haven't figured out the correct
> commands for either. (1) Check the name that pymol was started with.
> "MacPyMol.app" does not have Tk, while "PyMOLX11Hybrid.app" does. I'm not
> sure how to get the name (maybe could be guessed from sys.path?), and I
> know there are a lot more variants than those two available. (2) Check for
> the existence of the plugins menu. But this would have to be done without
> importing Tk and triggering the X11 check.
>
> Is there a simple way to do this I'm overlooking?
>
> Thanks,
> -Spencer
>
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