def print_alt(alternate_buffer):
    print 'Alternate buffer', alternate_buffer

def run(*args, **kwds):
    print 'Arguments:', str(args)
    print 'Keywords:', str(kwds)

def run_wrapper(fn, *args, **kwds):
    alternate_buffer = kwds.get('alternate_buffer', True)
    if 'alternate_buffer' in kwds.keys():
        del(kwds['alternate_buffer'])

    print_alt(alternate_buffer)
    fn(*args, **kwds)

##### COMMENTS:
# alternate_buffer should be added as run_wrapper last argument or,
# at least, always behind non keyword arguments. This is a Python issue.
# F.e.: this will fail:
#   run_wrapper(run, alternate_buffer=False, 'aaaa', 'bbbb', a=0, b=0)

# Another limitation of this method is that alternate_buffer *must be*
# a keyword argument, so this will also fail:
#   run_wrapper(run, False, 'aaaa', 'bbbb', a=0, b=0)

print '#' * 50
run_wrapper(run, 'aaaa', 'bbbb', a=0, b=0)
print '#' * 50
run_wrapper(run, 'aaaa', 'bbbb', a=0, b=0, alternate_buffer=True)
print '#' * 50
run_wrapper(run, 'aaaa', 'bbbb', a=0, b=0, alternate_buffer=False)
print '#' * 50