Slur

class spannertools.Slur(direction=None, overrides=None)

Slur.

Example 1. Slurs four notes:

>>> staff = Staff("c'4 d' e' f'")
>>> attach(Slur(), staff[:])
>>> show(staff) 

Example 2. Requires at least two leaves:

>>> staff = Staff("c'4 d' e' f'")
>>> attach(Slur(), staff[:1])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/joberholtzer/Development/abjad/abjad/tools/topleveltools/attach.py", line 29, in attach
    raise Exception(message)
Exception: Slur() attachment test fails for Selection([Note("c'4")]).
>>> 

Formats LilyPond ( command on first leaf in spanner.

Formats LilyPond ) command on last leaf in spanner.

Lineage

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Bases

Attribute summary

components Gets components in spanner.
direction Gets direction.
name Gets spanner name.
overrides Gets overrides.
__contains__(expr) Is true when spanner contains expr.
__copy__(\*args) Copies spanner.
__eq__(expr) Is true when ID of expr equals ID of Abjad object.
__format__([format_specification]) Formats Abjad object.
__getitem__(expr) Gets item from spanner.
__hash__() Hashes Abjad object.
__len__() Gets number of components in spanner.
__lt__(expr) Is true when spanner is less than expr.
__ne__(expr) Is true when Abjad object does not equal expr.
__repr__() Gets interpreter representation of Abjad object.

Read-only properties

(Spanner).components

Gets components in spanner.

Returns selection.

Slur.direction

Gets direction.

Forces slur above staff:

>>> staff = Staff("c'8 d'8 e'8 f'8")
>>> slur = spannertools.Slur(direction=Up)
>>> attach(slur, staff[:])
>>> show(staff) 

Forces slur below staff:

>>> staff = Staff("c'8 d'8 e'8 f'8")
>>> slur = spannertools.Slur(direction=Down)
>>> attach(slur, staff[:])
>>> show(staff) 

Positions slur according to LilyPond defaults:

>>> staff = Staff("c'8 d'8 e'8 f'8")
>>> slur = spannertools.Slur(direction=None)
>>> attach(slur, staff[:])
>>> show(staff) 

Defaults to none.

Set to up, down or none.

Returns up, down or none.

(Spanner).name

Gets spanner name.

Returns string.

(Spanner).overrides

Gets overrides.

Returns dict.

Special methods

(Spanner).__contains__(expr)

Is true when spanner contains expr. Otherwise false.

Returns true or false.

(Spanner).__copy__(*args)

Copies spanner.

Does not copy spanner components.

Returns new spanner.

(AbjadObject).__eq__(expr)

Is true when ID of expr equals ID of Abjad object. Otherwise false.

Returns true or false.

(AbjadObject).__format__(format_specification='')

Formats Abjad object.

Set format_specification to ‘’ or ‘storage’. Interprets ‘’ equal to ‘storage’.

Returns string.

(Spanner).__getitem__(expr)

Gets item from spanner.

Returns component.

(AbjadObject).__hash__()

Hashes Abjad object.

Required to be explicitly redefined on Python 3 if __eq__ changes.

Returns integer.

(Spanner).__len__()

Gets number of components in spanner.

Returns nonnegative integer.

(Spanner).__lt__(expr)

Is true when spanner is less than expr. Otherwise false.

Trivial comparison to allow doctests to work.

Returns true or false.

(AbjadObject).__ne__(expr)

Is true when Abjad object does not equal expr. Otherwise false.

Returns true or false.

(AbjadObject).__repr__()

Gets interpreter representation of Abjad object.

Returns string.