stafftools.iterate_staves_forward_in_expr

abjad.tools.stafftools.iterate_staves_forward_in_expr.iterate_staves_forward_in_expr(expr, start=0, stop=None)

New in version 2.0.

Iterate staves forward in expr:

abjad> score = Score(4 * Staff([]))

abjad> f(score)
\new Score <<
    \new Staff {
    }
    \new Staff {
    }
    \new Staff {
    }
    \new Staff {
    }
>>

abjad> for staff in stafftools.iterate_staves_forward_in_expr(score):
...     staff
...
Staff{}
Staff{}
Staff{}
Staff{}

Return generator.