[MacPorts] #57762: `async` is a reserved keyword in Python 3.7

[MacPorts]

#57762: `async` is a reserved keyword in Python 3.7
----------------------+-----------------------------
 Reporter:  benmaier  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.5.2
 Keywords:            |       Port:  py37-graph-tool
----------------------+-----------------------------
 The keyword `async` in `graph_tool.draw.interactive_window` in line 1185
 is reserved in Python 3.7, so it has been changed to `sync` in the active
 repository (see https://git.skewed.de/count0/graph-
 tool/blob/master/src/graph_tool/draw/gtk_draw.py#1185 ), however in the
 port it's still called async, raising the following error:

 {{{
 In [1]: import graph_tool.all as gt
 dbus[65811]: Dynamic session lookup supported but failed: launchd did not
 provide a socket path, verify that org.freedesktop.dbus-session.plist is
 loaded!
 Traceback (most recent call last):

   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/IPython/core/interactiveshell.py", line 2961, in run_code
     exec(code_obj, self.user_global_ns, self.user_ns)

   File "<ipython-input-1-f96fce82bbfd>", line 1, in <module>
     import graph_tool.all as gt

   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/graph_tool/all.py", line 35, in <module>
     from graph_tool.draw import *

   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/graph_tool/draw/__init__.py", line 875, in <module>
     from .cairo_draw import graph_draw, cairo_draw,
 get_hierarchy_control_points, default_cm

   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/graph_tool/draw/cairo_draw.py", line 1491, in <module>
     from .gtk_draw import *

   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/graph_tool/draw/gtk_draw.py", line 1185
     update_layout=True, async=False, no_main=False, **kwargs):
                             ^
 SyntaxError: invalid syntax
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/57762>
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