MeasurewiseQSchemaItem

class quantizationtools.MeasurewiseQSchemaItem(search_tree=None, tempo=None, time_signature=None, use_full_measure=None)

MeasurewiseQSchemaItem represents a change of state in the timeline of a metered quantization process.

>>> q_schema_item = quantizationtools.MeasurewiseQSchemaItem()
>>> print(format(q_schema_item))
quantizationtools.MeasurewiseQSchemaItem()

Define a change in tempo:

>>> q_schema_item = quantizationtools.MeasurewiseQSchemaItem(
...     tempo=((1, 4), 60),
...     )
>>> print(format(q_schema_item))
quantizationtools.MeasurewiseQSchemaItem(
    tempo=indicatortools.Tempo(
        reference_duration=durationtools.Duration(1, 4),
        units_per_minute=60,
        ),
    )

Define a change in time signature:

>>> q_schema_item = quantizationtools.MeasurewiseQSchemaItem(
...     time_signature=(6, 8),
...     )
>>> print(format(q_schema_item))
quantizationtools.MeasurewiseQSchemaItem(
    time_signature=indicatortools.TimeSignature((6, 8)),
    )

Test for beatspan, given a defined time signature:

>>> q_schema_item.beatspan
Duration(1, 8)

MeasurewiseQSchemaItem is immutable.

Return MeasurewiseQSchemaItem instance.

Lineage

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Bases

Attribute summary

beatspan The beatspan duration, if a time signature was defined.
search_tree The optionally defined search tree.
tempo The optionally defined tempo.
time_signature The optionally defined TimeSignature.
use_full_measure If True, use the full measure as the beatspan.
__eq__(argument) Is true when ID of argument equals ID of Abjad object.
__format__([format_specification]) Formats q schema item.
__hash__() Hashes Abjad object.
__ne__(argument) Is true when Abjad object does not equal argument.
__repr__() Gets interpreter representation of Abjad object.

Read-only properties

MeasurewiseQSchemaItem.beatspan

The beatspan duration, if a time signature was defined.

Returns duration or none.

(QSchemaItem).search_tree

The optionally defined search tree.

Returns search tree or none.

(QSchemaItem).tempo

The optionally defined tempo.

Returns tempo or none.

MeasurewiseQSchemaItem.time_signature

The optionally defined TimeSignature.

Returns time signature or none

MeasurewiseQSchemaItem.use_full_measure

If True, use the full measure as the beatspan.

Returns boolean or none.

Special methods

(AbjadObject).__eq__(argument)

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

Returns true or false.

(QSchemaItem).__format__(format_specification='')

Formats q schema item.

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

Returns string.

(AbjadObject).__hash__()

Hashes Abjad object.

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

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.