offset_happens_before_timespan_starts

timespantools.offset_happens_before_timespan_starts(timespan=None, offset=None, hold=False)

Makes time relation indicating that offset happens before timespan starts.

Example 1. Makes time relation indicating that offset happens before timespan starts:

>>> relation = timespantools.offset_happens_before_timespan_starts()
>>> print(format(relation))
timespantools.OffsetTimespanTimeRelation(
    inequality=timespantools.CompoundInequality(
        [
            timespantools.Inequality('offset < timespan.start'),
            ],
        logical_operator='and',
        ),
    )

Example 2. Makes time relation indicating that offset 1/2 happens before timespan starts:

>>> offset = durationtools.Offset(1, 2)
>>> relation = \
...     timespantools.offset_happens_before_timespan_starts(
...     offset=offset)
>>> print(format(relation))
timespantools.OffsetTimespanTimeRelation(
    inequality=timespantools.CompoundInequality(
        [
            timespantools.Inequality('offset < timespan.start'),
            ],
        logical_operator='and',
        ),
    offset=durationtools.Offset(1, 2),
    )

Example 3. Makes time relation indicating that offset happens before timespan [2, 8) starts:

>>> timespan = timespantools.Timespan(2, 8)
>>> relation = \
...     timespantools.offset_happens_before_timespan_starts(
...     timespan=timespan)
>>> print(format(relation))
timespantools.OffsetTimespanTimeRelation(
    inequality=timespantools.CompoundInequality(
        [
            timespantools.Inequality('offset < timespan.start'),
            ],
        logical_operator='and',
        ),
    timespan=timespantools.Timespan(
        start_offset=durationtools.Offset(2, 1),
        stop_offset=durationtools.Offset(8, 1),
        ),
    )

Example 4. Makes time relation indicating that offset 1/2 happens before timespan [2, 8) starts:

>>> relation = timespantools.offset_happens_before_timespan_starts(
...     timespan=timespan,
...     offset=offset,
...     hold=True,
...     )
>>> print(format(relation))
timespantools.OffsetTimespanTimeRelation(
    inequality=timespantools.CompoundInequality(
        [
            timespantools.Inequality('offset < timespan.start'),
            ],
        logical_operator='and',
        ),
    timespan=timespantools.Timespan(
        start_offset=durationtools.Offset(2, 1),
        stop_offset=durationtools.Offset(8, 1),
        ),
    offset=durationtools.Offset(1, 2),
    )

Example 5. Evaluates time relation indicating that offset 1/2 happens before timespan [2, 8) starts:

>>> timespantools.offset_happens_before_timespan_starts(
...     timespan=timespan,
...     offset=offset,
...     hold=False,
...     )
True

Returns time relation or boolean.