Description of problem:
pyatspi extensively sues async as a attribute/argument name:

https://github.com/GNOME/pyatspi2/blob/150e7b386736d41ed3b95a5d691879e0a3246f57/pyatspi/registry.py#L114
(and below that as well).

Version-Release number of selected component: pyatspi-2.26.0-6.fc29

https://koji.fedoraproject.org/koji/taskinfo?taskID=27887876

  File "/usr/lib/python3.7/site-packages/pyatspi/registry.py", line 114
    self.async = False	# not fully supported yet
             ^
SyntaxError: invalid syntax

https://docs.python.org/3/whatsnew/3.7.html#summary-release-highlights

Reproducer: fedpkg build --target=f29-python


This seems like part of an API, so please coordinate with upstream to rename this. 

I have a decorator that might be useful for this (consider it Public Domain or CC0):


    from functools import wraps
    
    
    def deprecated_async(func):
        """A decorator, that let's us keep our old API, but deprecate it"""
        @wraps(func)
        def inner(*args, **kwargs):
            if 'async' in kwargs:
                if 'asynchronous' in kwargs:
                    raise ValueError('cannot use both async and asynchronous '
                                     'keyword arguments! the latter obsoletes the first.')
                warnings.warn('async keyword argumnt is deprecated, '
                              'use asynchronous instead', DeprecationWarning)
                kwargs['asynchronous'] = kwargs.pop('async')
            return func(*args, **kwargs)
        return inner
    
    
    @deprecated_async
    def awesome_func(foo, bar, asynchronous=False):
        """People can pass async or asynchronous"""


This block orca.