Multiplication

class pitchtools.Multiplication(n=1)

Multiplication operator.

>>> Multiplication()
Multiplication(n=1)
>>> Multiplication(n=5)
Multiplication(n=5)

Object model of twelve-tone multiplication operator.

Lineage

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Bases

Attribute summary

n Gets index of multiplication.
__add__(operator) Composes multiplication and operator.
__call__(argument) Calls multiplication on argument.
__copy__(*arguments) Copies Abjad value object.
__eq__(argument) Is true when all initialization values of Abjad value object equal the initialization values of argument.
__format__([format_specification]) Formats Abjad object.
__hash__() Hashes Abjad value object.
__ne__(argument) Is true when Abjad object does not equal argument.
__repr__() Gets interpreter representation of Abjad object.
__str__() Gets string representation of operator.

Read-only properties

Multiplication.n

Gets index of multiplication.

>>> multiplication = Multiplication()
>>> multiplication.n
1
>>> multiplication = Multiplication(n=5)
>>> multiplication.n
5

Set to integer or none.

Special methods

Multiplication.__add__(operator)

Composes multiplication and operator.

Example segment:

>>> items = [0, 2, 4, 5]
>>> segment = PitchClassSegment(items=items)
>>> show(segment) 

Example operators:

>>> multiplication = Multiplication(n=5)
>>> transposition = Transposition(n=3)

Transposition followed by multiplication:

>>> operator = multiplication + transposition
>>> str(operator)
'M5T3'
>>> segment_ = operator(segment)
>>> show(segment_) 

Same as above because multiplication and transposition commute:

>>> operator = transposition + multiplication
>>> str(operator)
'T3M5'
>>> segment_ = operator(segment)
>>> show(segment_) 

Returns compound operator.

Multiplication.__call__(argument)

Calls multiplication on argument.

Multiplies pitch-class:

>>> multiplication = Multiplication(n=5)
>>> pitch_class = NumberedPitchClass(4)
>>> multiplication(pitch_class)
NumberedPitchClass(8)

Multiplies pitch:

>>> multiplication = Multiplication(n=7)
>>> pitch = NamedPitch("f'")
>>> multiplication(pitch)
NamedPitch("b'")

Returns new object with type equal to that of argument.

(AbjadValueObject).__copy__(*arguments)

Copies Abjad value object.

Returns new Abjad value object.

(AbjadValueObject).__eq__(argument)

Is true when all initialization values of Abjad value object equal the initialization values of argument.

Returns true or false.

(AbjadObject).__format__(format_specification='')

Formats Abjad object.

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

Returns string.

(AbjadValueObject).__hash__()

Hashes Abjad value object.

Returns integer.

(AbjadObject).__ne__(argument)

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

Returns true or false.

(AbjadObject).__repr__()

Gets interpreter representation of Abjad object.

Returns string.

Multiplication.__str__()

Gets string representation of operator.

>>> str(Multiplication())
'M1'
>>> str(Multiplication(n=5))
'M5'