scala-tessella / ring-seq-py

Extends Python list, str and tuple with ring (circular) methods

RingSeqPy

A library that adds new operations to Python list, tuple and str for when such a sequence needs to be considered circular, its elements forming a ring.

Working for Python 3.10 and above.

Installation

pip install ring-seq-py

Get started

from ring_seq import RingSeq

>>> RingSeq('RING').rotate_right(1)
'GRIN'
>>> RingSeq([0, 1, 2, 3]).start_at(2)
[2, 3, 0, 1]
>>> RingSeq((1, 3, 5, 7, 9)).reflect_at(3)
(7, 5, 3, 1, 9)

or alternatively, without the class RingSeq wrapper:

from ring_seq.methods import rotate_right, start_at, reflect_at

>>> rotate_right('RING', 1)
'GRIN'
>>> start_at([0, 1, 2, 3], 2)
[2, 3, 0, 1]
>>> reflect_at((1, 3, 5, 7, 9), 3)
(7, 5, 3, 1, 9)

Need

Whenever data are structured in a circular sequence, chances are you don't want to locally reinvent the wheel (pun intended).

Solution

RingSeqPy is a small, purely functional, self-contained library, where most of the circular use cases are already solved and building blocks provided for the others.

Other languages

The same library is available also for the Scala language, check RingSeq (Scala version).