human
Complete this python program:
def default_index(func):
assistant
#Here is the Python program you requested.

    """Decorator assuring the wrapped method may only run if we are the default
    repository index. This is as we rely on git commands that operate
    on that index only.
    """
    @wraps(func)
    def check_default_index(self, *args, **kwargs):
        if (self._file_path != self._index_path()):
            raise AssertionError(('Cannot    call    %r    on    indices    that    do    not    represent    the    default    git    index' % func.__name__))
        return func(self, *args, **kwargs)
    return check_default_index