def METHOD_NAME():
    """Deprecate pf.signals.exponential_sweep"""
    if version.parse(pf.__version__) >= version.parse('0.5.0'):
        with pytest.raises(AttributeError):
            # remove exponential_sweep() from pyfar 0.5.0!
            pf.signals.exponential_sweep(2**10, [1e3, 20e3])