def _excerpt_step(n_samples, n_excerpts=None, excerpt_size=None):
    """Compute the step of an excerpt set as a function of the number
    of excerpts or their sizes."""
    assert n_excerpts >= 2
    step = max((n_samples - excerpt_size) // (n_excerpts - 1),
               excerpt_size)
    return step
def _excerpt_step ( n_samples , n_excerpts = None , excerpt_size = None ) : assert n_excerpts >= 2 step = max ( ( n_samples - excerpt_size ) // ( n_excerpts - 1 ) , excerpt_size ) return step
Compute the step of an excerpt set as a function of the number
    of excerpts or their sizes.