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

    """Label a test as an example.
    Parameters
    t : callable
    The test to label as slow.
    Returns
    t : callable
    The decorated test `t`.
    Examples
    The `statsmodels.compat.testing` module includes ``example``.
    A test can be decorated as slow like this::
    from statsmodels.compat.testing import example
    @example
    def test_example(self):
    print(\Running an example\)
    """
    t.example = True
    return t