






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_		:    Tuple   							=     DUMMY_UNKNOWN_IDENTIFIER
# An actual model hosted on huggingface.co

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

a_		:    Dict   							=     'd9e9f15bc825e4b2c9249e9578f884bbcb5e3684'
# Sha-1 of config.json on the top of `main`, for checking purposes
a_		:    int   							=     '4b243c475af8d0a7754e87d7d096c92e5199ec2fe168a2ee7998e3b8e9bcb1d3'






@contextlib.contextmanager
def 					lowerCamelCase__					():
			print('Welcome!')
			yield
			print('Bye!')






@contextlib.contextmanager
def 					lowerCamelCase__					():
			print('Bonjour!')
			yield
			print('Au revoir!')

class 		_snake_case	(	unittest.TestCase       ):






			def  SCREAMING_SNAKE_CASE__     (							self)   ->							Any:
						# If the spec is missing, importlib would not be able to import the module dynamically.
						assert transformers.__spec__ is not None
						assert importlib.util.find_spec('transformers') is not None



class 		_snake_case	(	unittest.TestCase       ):






			@unittest.mock.patch('sys.stdout'		,       new_callable=io.StringIO)
			def  SCREAMING_SNAKE_CASE__     (							self		,       a)   ->							List[str]:
						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  SCREAMING_SNAKE_CASE__     (							self		,       a)   ->							List[str]:
						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  SCREAMING_SNAKE_CASE__     (							self		,       a)   ->							Optional[int]:
						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  SCREAMING_SNAKE_CASE__     (							self)   ->							List[Any]:
						self.assertEqual(find_labels(a)		,       ['labels'])
						self.assertEqual(find_labels(a)		,       ['labels', 'next_sentence_label'])
						self.assertEqual(find_labels(a)		,       ['start_positions', 'end_positions'])

						class 		_snake_case	(	A__       ):
									pass



						self.assertEqual(find_labels(a)		,       ['labels'])






			@require_tf
			def  SCREAMING_SNAKE_CASE__     (							self)   ->							List[str]:
						self.assertEqual(find_labels(a)		,       ['labels'])
						self.assertEqual(find_labels(a)		,       ['labels', 'next_sentence_label'])
						self.assertEqual(find_labels(a)		,       ['start_positions', 'end_positions'])

						class 		_snake_case	(	A__       ):
									pass



						self.assertEqual(find_labels(a)		,       ['labels'])







			@require_flax
			def  SCREAMING_SNAKE_CASE__     (							self)   ->							str:
						# Flax models don't have labels
						self.assertEqual(find_labels(a)		,       [])
						self.assertEqual(find_labels(a)		,       [])
						self.assertEqual(find_labels(a)		,       [])

						class 		_snake_case	(	A__       ):
									pass



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










from __future__ import annotations

from collections.abc import MutableSequence



class       a_       :





	def __init__(							self      ,     SCREAMING_SNAKE_CASE      ,     SCREAMING_SNAKE_CASE      )  ->					None:




				"""simple docstring"""



				if len(SCREAMING_SNAKE_CASE      ) != degree + 1:
							raise ValueError(
							    'The number of coefficients should be equal to the degree + 1.'      )

				SCREAMING_SNAKE_CASE_								=						list(SCREAMING_SNAKE_CASE      )
				SCREAMING_SNAKE_CASE_								=						degree





	def __add__(							self      ,     SCREAMING_SNAKE_CASE      )  ->					Polynomial:




				"""simple docstring"""



				if self.degree > polynomial_a.degree:
							SCREAMING_SNAKE_CASE_								=						self.coefficients[:]
							for i in range(polynomial_a.degree + 1      ):
										coefficients[i] += polynomial_a.coefficients[i]
							return Polynomial(self.degree      ,     SCREAMING_SNAKE_CASE      )
				else:
							SCREAMING_SNAKE_CASE_								=						polynomial_a.coefficients[:]
							for i in range(self.degree + 1      ):
										coefficients[i] += self.coefficients[i]
							return Polynomial(polynomial_a.degree      ,     SCREAMING_SNAKE_CASE      )





	def __sub__(							self      ,     SCREAMING_SNAKE_CASE      )  ->					Polynomial:




				"""simple docstring"""



				return self + polynomial_a * Polynomial(0      ,     [-1]      )





	def __neg__(							self      )  ->					Polynomial:




				"""simple docstring"""



				return Polynomial(self.degree      ,     [-c for c in self.coefficients]      )





	def __mul__(							self      ,     SCREAMING_SNAKE_CASE      )  ->					Polynomial:




				"""simple docstring"""



				SCREAMING_SNAKE_CASE_								=						[0] * (self.degree + polynomial_a.degree + 1)
				for i in range(self.degree + 1      ):
							for j in range(polynomial_a.degree + 1      ):
										coefficients[i + j] += (
										    self.coefficients[i] * polynomial_a.coefficients[j]
										)

				return Polynomial(self.degree + polynomial_a.degree      ,     SCREAMING_SNAKE_CASE      )





	def 						A_(							self      ,     SCREAMING_SNAKE_CASE      )  ->					int | float:




				"""simple docstring"""



				SCREAMING_SNAKE_CASE_								=						0
				for i in range(self.degree + 1      ):
							result += self.coefficients[i] * (substitution**i)
				return result





	def __str__(							self      )  ->					str:




				"""simple docstring"""



				SCREAMING_SNAKE_CASE_								=						''
				for i in range(self.degree      ,     -1      ,     -1      ):
							if self.coefficients[i] == 0:
										continue
							elif self.coefficients[i] > 0:
										if polynomial:
													polynomial += " + "
							else:
										polynomial += " - "

							if i == 0:
										polynomial += str(abs(self.coefficients[i]      )      )
							elif i == 1:
										polynomial += str(abs(self.coefficients[i]      )      ) + "x"
							else:
										polynomial += str(abs(self.coefficients[i]      )      ) + "x^" + str(SCREAMING_SNAKE_CASE      )

				return polynomial





	def __repr__(							self      )  ->					str:




				"""simple docstring"""



				return self.__str__()





	def 						A_(							self      )  ->					Polynomial:




				"""simple docstring"""



				SCREAMING_SNAKE_CASE_								=						[0] * self.degree
				for i in range(self.degree      ):
							SCREAMING_SNAKE_CASE_								=						self.coefficients[i + 1] * (i + 1)
				return Polynomial(self.degree - 1      ,     SCREAMING_SNAKE_CASE      )





	def 						A_(							self      ,     SCREAMING_SNAKE_CASE = 0      )  ->					Polynomial:




				"""simple docstring"""



				SCREAMING_SNAKE_CASE_								=						[0] * (self.degree + 2)
				SCREAMING_SNAKE_CASE_								=						constant
				for i in range(self.degree + 1      ):
							SCREAMING_SNAKE_CASE_								=						self.coefficients[i] / (i + 1)
				return Polynomial(self.degree + 1      ,     SCREAMING_SNAKE_CASE      )





	def __eq__(							self      ,     SCREAMING_SNAKE_CASE      )  ->					bool:




				"""simple docstring"""



				if not isinstance(SCREAMING_SNAKE_CASE      ,     SCREAMING_SNAKE_CASE      ):
							return False

				if self.degree != polynomial_a.degree:
							return False

				for i in range(self.degree + 1      ):
							if self.coefficients[i] != polynomial_a.coefficients[i]:
										return False

				return True





	def __ne__(							self      ,     SCREAMING_SNAKE_CASE      )  ->					bool:




				"""simple docstring"""



				return not self.__eq__(SCREAMING_SNAKE_CASE      )
