FrozenIntervalSet

class part.FrozenIntervalSet(iterable=None)

Frozen Interval Set class.

The FrozenIntervalSet class (which inherits from the IntervalSet class) is designed to hold frozen disjoint intervals.

__init__(iterable=None)

Initialize a FrozenIntervalSet instance.

Parameters

iterable (Iterable) –

An optional iterable of:

• Atomic

• TO

• Tuple[TO, TO]

• Tuple[TO, TO, Optional[bool]]

• Tuple[TO, TO, Optional[bool], Optional[bool]]

Examples

>>> from part import FrozenIntervalSet
>>> a = FrozenIntervalSet([2, (6, 7), (8, 9, None), (10, 11, True, True)])
>>> print(a)
[2;2] | [6;7) | (8;9) | [10;11]

__hash__()

A FrozenIntervalSet instance is hashable.

It can be used as key in dictionaries.

__getitem__(item)

Return the nth interval. The array access operator supports slicing.

Parameters

item (Union[int, slice]) – The interval requested.

Returns

Return type

The nth interval

Raises

IndexError – If the item is out of range.

Examples

>>> from part import FrozenIntervalSet
>>> a = FrozenIntervalSet([2, (6, 7), (8, 9, None), (10, 11, True, True)])
>>> print(a[0])
[2;2]
>>> print(a[2])
(8;9)
>>> print(a[2])
(8;9)
>>> print(a[1:3])
[6;7) | (8;9)