import inspect
import unittest





class       lowercase__		(     unittest.TestCase):


						def  __A ( self			:       str		):





												'''simple docstring'''





												try:
																		import diffusers  # noqa: F401
												except ImportError:
																		assert False



						def  __A ( self			:       int		):





												'''simple docstring'''





												import diffusers
												from diffusers.dependency_versions_table import deps

												SCREAMING_SNAKE_CASE							:					List[str]           =							inspect.getmembers(UpperCamelCase__					,	inspect.isclass		)

												for cls_name, cls_module in all_classes:
																		if "dummy_" in cls_module.__module__:
																								for backend in cls_module._backends:
																														if backend == "k_diffusion":
																																				SCREAMING_SNAKE_CASE							:					int           =							'''k-diffusion'''
																														elif backend == "invisible_watermark":
																																				SCREAMING_SNAKE_CASE							:					Any           =							'''invisible-watermark'''
																														assert backend in deps, f"""{backend} is not in the deps table!"""






from __future__ import annotations

from typing import Any





class       lowercase__		(     UpperCamelCase_):
						pass






class       lowercase__		:


						def __init__( self			:       Union[str, Any]					,	UpperCamelCase__			:       Any		):





												'''simple docstring'''





												SCREAMING_SNAKE_CASE							:					Any           =							data
												SCREAMING_SNAKE_CASE							:					Node | None           =							None


						def __iter__( self			:       Any		):





												'''simple docstring'''





												SCREAMING_SNAKE_CASE							:					List[str]           =							self
												SCREAMING_SNAKE_CASE							:					Tuple           =							[]
												while node:
																		if node in visited:
																								raise ContainsLoopError
																		visited.append(UpperCamelCase__		)
																		yield node.data
																		SCREAMING_SNAKE_CASE							:					Dict           =							node.next_node



						@property
						def  __A ( self			:       Optional[int]		):





												'''simple docstring'''





												try:
																		list(self		)
																		return False
												except ContainsLoopError:
																		return True


if __name__ == "__main__":
					__UpperCamelCase	: List[Any]    		=  Node(1)
					__UpperCamelCase	: str    		=  Node(2)
					__UpperCamelCase	: Dict    		=  Node(3)
					__UpperCamelCase	: List[Any]    		=  Node(4)
					print(root_node.has_loop)  # False
					__UpperCamelCase	: int    		=  root_node.next_node
					print(root_node.has_loop)  # True

					__UpperCamelCase	: Union[str, Any]    		=  Node(5)
					__UpperCamelCase	: Union[str, Any]    		=  Node(6)
					__UpperCamelCase	: List[Any]    		=  Node(5)
					__UpperCamelCase	: List[str]    		=  Node(6)
					print(root_node.has_loop)  # False

					__UpperCamelCase	: List[Any]    		=  Node(1)
					print(root_node.has_loop)  # False





