New in version 2.3.
True when expr is a component and has a dynamic mark attached:
abjad> staff = Staff("c'8 d'8 e'8 f'8")
abjad> contexttools.DynamicMark('p')(staff[0])
DynamicMark('p')(c'8)
abjad> f(staff)
\new Staff {
c'8 \p
d'8
e'8
f'8
}
abjad> contexttools.is_component_with_dynamic_mark_attached(staff[0])
True
Otherwise false:
abjad> contexttools.is_component_with_dynamic_mark_attached(staff)
False
Return boolean.