BeatwiseQSchemaItem

class quantizationtools.BeatwiseQSchemaItem(beatspan=None, search_tree=None, tempo=None)

BeatwiseQSchemaItem represents a change of state in the timeline of an unmetered quantization process.

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

Define a change in tempo:

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

Define a change in beatspan:

>>> q_schema_item = quantizationtools.BeatwiseQSchemaItem(
...     beatspan=(1, 8),
...     )
>>> print(format(q_schema_item))
quantizationtools.BeatwiseQSchemaItem(
    beatspan=durationtools.Duration(1, 8),
    )

Lineage

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Bases

Attribute summary

beatspan The optionally defined beatspan duration.
search_tree The optionally defined search tree.
tempo The optionally defined tempo.
__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

BeatwiseQSchemaItem.beatspan

The optionally defined beatspan duration.

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.

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.