listr 1.0.1

python list with pointer

Listr is python module that can be used to:

• iterate list through pointer/cursor current(), next() , prev() , start() , end().
• iterate list through iter() (without looping/queue-like)

installation

pip install listr

Example

# -*- coding: utf-8 -*-
from listr import Listr
import unittest

class ListrTest(unittest.TestCase):

	def test_pointer(self):
		t = Listr()
		t.import_list(["one","two","three"])
		self.assertEqual(t.current(), "one")
		self.assertEqual(t.next(), "two")
		self.assertEqual(t.next(), "three")
		self.assertEqual(t.next(), "one")
		self.assertEqual(t.prev(), "three")
		self.assertEqual(t.start(), "one")
		self.assertEqual(t.end(), "three")

	def test_iterator(self):
		t = Listr()
		t.import_list(range(1,10))
		for i in t.list:
			self.assertEqual(i,t.iter())
		self.assertEqual(t.iter_check(), False)
		t.iter_reset()
		self.assertEqual(t.iter_num, 0)


if __name__=="__main__":
	unittest.main()
	

Hint

• you can access list through Listr.list property/attribute.
• iter() can be access with python native iterator (Listr object is iterable).