






from __future__ import annotations

from collections.abc import Iterator
from typing import Any



class 							SCREAMING_SNAKE_CASE__		:





     """simple docstring"""






     def __init__(      self  :						Tuple							,	__A  :						Tuple ):
      snake_case__				:   Any     =						data
      snake_case__				:   Node | None     =						None



class 							SCREAMING_SNAKE_CASE__		:





     """simple docstring"""






     def __init__(      self  :						Tuple ):
      snake_case__				:   Union[str, Any]     =						None
      snake_case__				:   int     =						None



     def __iter__(      self  :						List[Any] ):
      snake_case__				:   Tuple     =						self.head
      while self.head:
       yield node.data
       snake_case__				:   Union[str, Any]     =						node.next
       if node == self.head:
        break



     def __len__(      self  :						Union[str, Any] ):
      return sum(1 for _ in self )



     def __repr__(      self  :						Optional[int] ):
      return "->".join(str(lowercase__ ) for item in iter(self ) )



     def  _lowercase  (      self  :						List[Any]							,	__A  :						Optional[int] ):
      self.insert_nth(len(self )							,	lowercase__ )



     def  _lowercase  (      self  :						Union[str, Any]							,	__A  :						Dict ):
      self.insert_nth(0							,	lowercase__ )



     def  _lowercase  (      self  :						List[Any]							,	__A  :						List[Any]							,	__A  :						Tuple ):
      if index < 0 or index > len(self ):
       raise IndexError("list index out of range." )
      snake_case__				:   Union[str, Any]     =						Node(lowercase__ )
      if self.head is None:
       snake_case__				:   List[Any]     =						new_node  # first node points itself
       snake_case__				:   Union[str, Any]     =						new_node
      elif index == 0:  # insert at head
       snake_case__				:   int     =						self.head
       snake_case__				:   str     =						new_node
      else:
       snake_case__				:   Any     =						self.head
       for _ in range(index - 1 ):
        snake_case__				:   Union[str, Any]     =						temp.next
       snake_case__				:   Dict     =						temp.next
       snake_case__				:   List[str]     =						new_node
       if index == len(self ) - 1:  # insert at tail
        snake_case__				:   Tuple     =						new_node



     def  _lowercase  (      self  :						Optional[Any] ):
      return self.delete_nth(0 )



     def  _lowercase  (      self  :						Union[str, Any] ):
      return self.delete_nth(len(self ) - 1 )



     def  _lowercase  (      self  :						Optional[int]							,	__A  :						str = 0 ):
      if not 0 <= index < len(self ):
       raise IndexError("list index out of range." )
      snake_case__				:   Union[str, Any]     =						self.head
      if self.head == self.tail:  # just one node
       snake_case__				:   Tuple     =						None
      elif index == 0:  # delete head node
       snake_case__				:   List[str]     =						self.tail.next.next
       snake_case__				:   Optional[Any]     =						self.head.next
      else:
       snake_case__				:   Union[str, Any]     =						self.head
       for _ in range(index - 1 ):
        snake_case__				:   Tuple     =						temp.next
       snake_case__				:   str     =						temp.next
       snake_case__				:   Optional[Any]     =						temp.next.next
       if index == len(self ) - 1:  # delete at tail
        snake_case__				:   List[str]     =						temp
      return delete_node.data






     def  _lowercase  (      self  :						Dict ):
      return len(self ) == 0







def   SCREAMING_SNAKE_CASE       (				):
 snake_case__				:   Optional[Any]     =						CircularLinkedList()
 assert len(SCREAMING_SNAKE_CASE__     ) == 0
 assert circular_linked_list.is_empty() is True
 assert str(SCREAMING_SNAKE_CASE__     ) == ""

 try:
  circular_linked_list.delete_front()
  raise AssertionError  # This should not happen
 except IndexError:
  assert True  # This should happen

 try:
  circular_linked_list.delete_tail()
  raise AssertionError  # This should not happen
 except IndexError:
  assert True  # This should happen

 try:
  circular_linked_list.delete_nth(-1     )
  raise AssertionError
 except IndexError:
  assert True

 try:
  circular_linked_list.delete_nth(0     )
  raise AssertionError
 except IndexError:
  assert True

 assert circular_linked_list.is_empty() is True
 for i in range(5     ):
  assert len(SCREAMING_SNAKE_CASE__     ) == i
  circular_linked_list.insert_nth(SCREAMING_SNAKE_CASE__  ,						i + 1     )
 assert str(SCREAMING_SNAKE_CASE__     ) == "->".join(str(SCREAMING_SNAKE_CASE__     ) for i in range(1  ,						6     )     )

 circular_linked_list.insert_tail(6     )
 assert str(SCREAMING_SNAKE_CASE__     ) == "->".join(str(SCREAMING_SNAKE_CASE__     ) for i in range(1  ,						7     )     )
 circular_linked_list.insert_head(0     )
 assert str(SCREAMING_SNAKE_CASE__     ) == "->".join(str(SCREAMING_SNAKE_CASE__     ) for i in range(0  ,						7     )     )

 assert circular_linked_list.delete_front() == 0
 assert circular_linked_list.delete_tail() == 6
 assert str(SCREAMING_SNAKE_CASE__     ) == "->".join(str(SCREAMING_SNAKE_CASE__     ) for i in range(1  ,						6     )     )
 assert circular_linked_list.delete_nth(2     ) == 3

 circular_linked_list.insert_nth(2  ,						3     )
 assert str(SCREAMING_SNAKE_CASE__     ) == "->".join(str(SCREAMING_SNAKE_CASE__     ) for i in range(1  ,						6     )     )

 assert circular_linked_list.is_empty() is False


if __name__ == "__main__":
 import doctest

 doctest.testmod()











# tests directory-specific settings - this file is run automatically
# by pytest before any tests are run

import sys
import warnings
from os.path import abspath, dirname, join


# allow having multiple repository checkouts and not needing to remember to rerun
# 'pip install -e .[dev]' when switching between checkouts and running tests.
__lowerCamelCase      :    Dict   		=   abspath(join(dirname(dirname(__file__)), """src"""))
sys.path.insert(1, git_repo_path)

# silence FutureWarning warnings in tests since often we can't act on them until
# they become normal warnings - i.e. the tests still need to test the current functionality
warnings.simplefilter(action="""ignore""", category=FutureWarning)







def   SCREAMING_SNAKE_CASE       (				snake_case_      :							str     ):
	from diffusers.utils.testing_utils import pytest_addoption_shared

	pytest_addoption_shared(snake_case_     )







def   SCREAMING_SNAKE_CASE       (				snake_case_      :							Any     ):
	from diffusers.utils.testing_utils import pytest_terminal_summary_main

	snake_case__				:   Optional[int]     =						terminalreporter.config.getoption("--make-reports"     )
	if make_reports:
		pytest_terminal_summary_main(snake_case_  ,						id=snake_case_     )



