cogent3.core.slice_record.SliceRecord

class SliceRecord(*, parent_len: int, start: int | None = None, stop: int | None = None, step: int | None = None, offset: int = 0)

records cumulative slice operations on an object without modifying it

Attributes:

is_reversed

offset

parent_len

parent_start

returns the start on the parent plus strand

parent_stop

returns the stop on the parent plus strand

plus_start

start on plus strand

plus_step

step on plus strand

plus_stop

stop on plus strand

start

step

stop

Methods

absolute_position(rel_index[, include_boundary])	Converts an index relative to the current view to be with respect to the coordinates of the original "Python sequence".
copy([sliced])	returns self
relative_position(abs_index[, stop])	converts an index on the original "Python sequence" into an index on this "view"
to_rich_dict()	returns dict suitable for serialisation

Notes

Basis for lazy evaluation of slicing operations on sequences and alignments. A reference to an instance of this class is used by different view objects.