Interval

abstract class pitchtools.Interval

Interval base class.

Lineage

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Bases

Attribute summary

cents Cents of interval.
is_named_interval_abbreviation(expr) Is true when expr is a named interval abbreviation.
is_named_interval_quality_abbreviation(expr) Is true when expr is a named-interval quality abbreviation.
__abs__() Absolute value of interval.
__copy__(\*args) Copies Abjad value object.
__eq__(expr) Is true when all initialization values of Abjad value object equal the initialization values of expr.
__float__() Change interval to float.
__format__([format_specification]) Formats Abjad object.
__hash__() Hashes Abjad value object.
__int__() Change interval to integer.
__ne__(arg) Is true when interval does not equal arg.
__neg__() Negates interval.
__repr__() Gets interpreter representation of Abjad object.
__str__() String representation of interval.

Read-only properties

Interval.cents

Cents of interval.

Returns nonnegative number.

Class & static methods

static Interval.is_named_interval_abbreviation(expr)

Is true when expr is a named interval abbreviation. Otherwise false:

>>> pitchtools.Interval.is_named_interval_abbreviation('+M9')
True

The regex ^([+,-]?)(M|m|P|aug|dim)(\d+)$ underlies this predicate.

Returns true or false.

static Interval.is_named_interval_quality_abbreviation(expr)

Is true when expr is a named-interval quality abbreviation. Otherwise false:

>>> pitchtools.Interval.is_named_interval_quality_abbreviation('aug')
True

The regex ^M|m|P|aug|dim$ underlies this predicate.

Returns true or false.

Special methods

Interval.__abs__()

Absolute value of interval.

Returns new interval.

(AbjadValueObject).__copy__(*args)

Copies Abjad value object.

Returns new Abjad value object.

(AbjadValueObject).__eq__(expr)

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

Returns true or false.

Interval.__float__()

Change interval to float.

Returns float.

(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.

Interval.__int__()

Change interval to integer.

Returns integer.

Interval.__ne__(arg)

Is true when interval does not equal arg.

Returns true or false.

Interval.__neg__()

Negates interval.

Returns interval.

(AbjadObject).__repr__()

Gets interpreter representation of Abjad object.

Returns string.

Interval.__str__()

String representation of interval.

Returns string.