





from __future__ import annotations

from collections.abc import Iterator
from typing import Any






class     lowercase__       :

   '''simple docstring'''


   def __init__(    self,		__magic_name__							) ->      Tuple:






       """simple docstring"""
       UpperCamelCase__							:				Any          =      data
       UpperCamelCase__							:				Node | None          =      None






class     lowercase__       :

   '''simple docstring'''


   def __init__(    self							) ->      Dict:






       """simple docstring"""
       UpperCamelCase__							:				int          =      None
       UpperCamelCase__							:				Tuple          =      None




   def __iter__(    self							) ->      Iterator[Any]:






       """simple docstring"""
       UpperCamelCase__							:				Optional[int]          =      self.head
       while self.head:
           yield node.data
           UpperCamelCase__							:				List[Any]          =      node.next
           if node == self.head:
               break




   def __len__(    self							) ->      int:






       """simple docstring"""
       return sum(1 for _ in self							)




   def __repr__(    self							) ->      Any:






       """simple docstring"""
       return "->".join(str(__magic_name__							) for item in iter(self							)							)




   def       UpperCamelCase__  (    self,		__magic_name__							) ->      None:






       """simple docstring"""
       self.insert_nth(len(self							),		__magic_name__							)




   def       UpperCamelCase__  (    self,		__magic_name__							) ->      None:






       """simple docstring"""
       self.insert_nth(0,		__magic_name__							)




   def       UpperCamelCase__  (    self,		__magic_name__,		__magic_name__							) ->      None:






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




   def       UpperCamelCase__  (    self							) ->      List[Any]:






       """simple docstring"""
       return self.delete_nth(0							)




   def       UpperCamelCase__  (    self							) ->      Any:






       """simple docstring"""
       return self.delete_nth(len(self							) - 1							)




   def       UpperCamelCase__  (    self,		__magic_name__ = 0							) ->      Any:






       """simple docstring"""
       if not 0 <= index < len(self							):
           raise IndexError('''list index out of range.'''							)
       UpperCamelCase__							:				Tuple          =      self.head
       if self.head == self.tail:  # just one node
           UpperCamelCase__							:				Dict          =      None
       elif index == 0:  # delete head node
           UpperCamelCase__							:				Any          =      self.tail.next.next
           UpperCamelCase__							:				Dict          =      self.head.next
       else:
           UpperCamelCase__							:				str          =      self.head
           for _ in range(index - 1							):
               UpperCamelCase__							:				Optional[Any]          =      temp.next
           UpperCamelCase__							:				Tuple          =      temp.next
           UpperCamelCase__							:				Dict          =      temp.next.next
           if index == len(self							) - 1:  # delete at tail
               UpperCamelCase__							:				Optional[int]          =      temp
       return delete_node.data




   def       UpperCamelCase__  (    self							) ->      bool:






       """simple docstring"""
       return len(self							) == 0




def 		lowerCAmelCase_    (  )      ->	None:
    UpperCamelCase__							:				str          =      CircularLinkedList()
    assert len(__UpperCAmelCase      ) == 0
    assert circular_linked_list.is_empty() is True
    assert str(__UpperCAmelCase      ) == ""

    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(__UpperCAmelCase      ) == i
        circular_linked_list.insert_nth(__UpperCAmelCase		,   i + 1      )
    assert str(__UpperCAmelCase      ) == "->".join(str(__UpperCAmelCase      ) for i in range(1		,   6      )      )

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

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

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

    assert circular_linked_list.is_empty() is False


if __name__ == "__main__":
  import doctest

  doctest.testmod()








def 		lowerCAmelCase_    (  __UpperCAmelCase:			float		,   __UpperCAmelCase:			int      )      ->	float:
    if digit_amount > 0:
        return round(number - int(__UpperCAmelCase      )		,   __UpperCAmelCase      )
    return number - int(__UpperCAmelCase      )


if __name__ == "__main__":
  print(decimal_isolate(1.53, 0))
  print(decimal_isolate(35.345, 1))
  print(decimal_isolate(35.345, 2))
  print(decimal_isolate(35.345, 3))
  print(decimal_isolate(-14.789, 3))
  print(decimal_isolate(0, 2))
  print(decimal_isolate(-14.123, 1))
  print(decimal_isolate(-14.123, 2))
  print(decimal_isolate(-14.123, 3))

