

import contextlib
import importlib
import io
import unittest

import transformers

# Try to import everything from transformers to ensure every object can be loaded.
from transformers import *  # noqa F406
from transformers.testing_utils import DUMMY_UNKNOWN_IDENTIFIER, require_flax, require_tf, require_torch
from transformers.utils import ContextManagers, find_labels, is_flax_available, is_tf_available, is_torch_available


if is_torch_available():
				from transformers import BertForPreTraining, BertForQuestionAnswering, BertForSequenceClassification

if is_tf_available():
				from transformers import TFBertForPreTraining, TFBertForQuestionAnswering, TFBertForSequenceClassification

if is_flax_available():
				from transformers import FlaxBertForPreTraining, FlaxBertForQuestionAnswering, FlaxBertForSequenceClassification


_a:    List[Any] 							=			DUMMY_UNKNOWN_IDENTIFIER
# An actual model hosted on huggingface.co

_a:    Dict 							=			"""main"""
# Default branch name
_a:    int 							=			"""f2c752cfc5c0ab6f4bdec59acea69eefbee381c2"""
# One particular commit (not the top of `main`)
_a:    List[str] 							=			"""aaaaaaa"""
# This commit does not exist, so we should 404.

_a:    List[str] 							=			"""d9e9f15bc825e4b2c9249e9578f884bbcb5e3684"""
# Sha-1 of config.json on the top of `main`, for checking purposes
_a:    Optional[int] 							=			"""4b243c475af8d0a7754e87d7d096c92e5199ec2fe168a2ee7998e3b8e9bcb1d3"""



@contextlib.contextmanager
def       __lowerCAmelCase      (						):
	print("Welcome!"    )
	yield
	print("Bye!"    )



@contextlib.contextmanager
def       __lowerCAmelCase      (						):
	print("Bonjour!"    )
	yield
	print("Au revoir!"    )

class 						__UpperCamelCase    (					unittest.TestCase						):




	def       __A					(		self	:						int							):


		'''simple docstring'''







		assert transformers.__spec__ is not None
		assert importlib.util.find_spec("transformers"							) is not None


class 						__UpperCamelCase    (					unittest.TestCase						):




	@unittest.mock.patch("sys.stdout"		,	new_callable=io.StringIO							)
	def       __A					(		self	:						List[str]		,	lowerCAmelCase	:						Union[str, Any]							):


		'''simple docstring'''







		with ContextManagers([]							):
			print("Transformers are awesome!"							)
		# The print statement adds a new line at the end of the output
		self.assertEqual(mock_stdout.getvalue()		,	"Transformers are awesome!\n"							)




	@unittest.mock.patch("sys.stdout"		,	new_callable=io.StringIO							)
	def       __A					(		self	:						Dict		,	lowerCAmelCase	:						Optional[Any]							):


		'''simple docstring'''







		with ContextManagers([context_en()]							):
			print("Transformers are awesome!"							)
		# The output should be wrapped with an English welcome and goodbye
		self.assertEqual(mock_stdout.getvalue()		,	"Welcome!\nTransformers are awesome!\nBye!\n"							)




	@unittest.mock.patch("sys.stdout"		,	new_callable=io.StringIO							)
	def       __A					(		self	:						List[str]		,	lowerCAmelCase	:						Any							):


		'''simple docstring'''







		with ContextManagers([context_fr(), context_en()]							):
			print("Transformers are awesome!"							)
		# The output should be wrapped with an English and French welcome and goodbye
		self.assertEqual(mock_stdout.getvalue()		,	"Bonjour!\nWelcome!\nTransformers are awesome!\nBye!\nAu revoir!\n"							)




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


		'''simple docstring'''







		self.assertEqual(find_labels(lowerCAmelCase							)		,	["labels"]							)
		self.assertEqual(find_labels(lowerCAmelCase							)		,	["labels", "next_sentence_label"]							)
		self.assertEqual(find_labels(lowerCAmelCase							)		,	["start_positions", "end_positions"]							)

		class 						__UpperCamelCase    (					lowercase						):
			pass


		self.assertEqual(find_labels(lowerCAmelCase							)		,	["labels"]							)




	@require_tf
	def       __A					(		self	:						List[str]							):


		'''simple docstring'''







		self.assertEqual(find_labels(lowerCAmelCase							)		,	["labels"]							)
		self.assertEqual(find_labels(lowerCAmelCase							)		,	["labels", "next_sentence_label"]							)
		self.assertEqual(find_labels(lowerCAmelCase							)		,	["start_positions", "end_positions"]							)

		class 						__UpperCamelCase    (					lowercase						):
			pass


		self.assertEqual(find_labels(lowerCAmelCase							)		,	["labels"]							)




	@require_flax
	def       __A					(		self	:						int							):


		'''simple docstring'''







		self.assertEqual(find_labels(lowerCAmelCase							)		,	[]							)
		self.assertEqual(find_labels(lowerCAmelCase							)		,	[]							)
		self.assertEqual(find_labels(lowerCAmelCase							)		,	[]							)

		class 						__UpperCamelCase    (					lowercase						):
			pass


		self.assertEqual(find_labels(lowerCAmelCase							)		,	[]							)


from __future__ import annotations

from collections import Counter
from random import random

class 						__UpperCamelCase    :




	def __init__(		self	:						Any							):


		'''simple docstring'''







		UpperCAmelCase_       				=			{}




	def       __A					(		self	:						List[str]		,	lowerCAmelCase	:						str							):


		'''simple docstring'''







		UpperCAmelCase_       				=			{}




	def       __A					(		self	:						Union[str, Any]		,	lowerCAmelCase	:						str		,	lowerCAmelCase	:						str		,	lowerCAmelCase	:						float							):


		'''simple docstring'''







		if nodea not in self.connections:
			self.add_node(lowerCAmelCase							)
		if nodea not in self.connections:
			self.add_node(lowerCAmelCase							)
		UpperCAmelCase_       				=			probability




	def       __A					(		self	:						Tuple							):


		'''simple docstring'''







		return list(self.connections							)




	def       __A					(		self	:						str		,	lowerCAmelCase	:						str							):


		'''simple docstring'''







		UpperCAmelCase_       				=			0
		UpperCAmelCase_       				=			random()

		for dest in self.connections[node]:
			current_probability += self.connections[node][dest]
			if current_probability > random_value:
				return dest
		return ""



def       __lowerCAmelCase      (						A       ,     A       ,     A    ):
	UpperCAmelCase_       				=			MarkovChainGraphUndirectedUnweighted()

	for nodea, nodea, probability in transitions:
		graph.add_transition_probability(A       ,     A       ,     A    )

	UpperCAmelCase_       				=			Counter(graph.get_nodes()    )
	UpperCAmelCase_       				=			start

	for _ in range(A    ):
		UpperCAmelCase_       				=			graph.transition(A    )
		visited[node] += 1

	return visited


if __name__ == "__main__":
				import doctest

				doctest.testmod()