
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


SCREAMING_SNAKE_CASE				:List[str]									=							DUMMY_UNKNOWN_IDENTIFIER
# An actual model hosted on huggingface.co

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

SCREAMING_SNAKE_CASE				:Any									=							'd9e9f15bc825e4b2c9249e9578f884bbcb5e3684'
# Sha-1 of config.json on the top of `main`, for checking purposes
SCREAMING_SNAKE_CASE				:Tuple									=							'4b243c475af8d0a7754e87d7d096c92e5199ec2fe168a2ee7998e3b8e9bcb1d3'


@contextlib.contextmanager
def 		UpperCAmelCase     (      )						->      int:







				"""simple docstring"""



				print("Welcome!"		)
				yield
				print("Bye!"		)


@contextlib.contextmanager
def 		UpperCAmelCase     (      )						->      Any:







				"""simple docstring"""



				print("Bonjour!"		)
				yield
				print("Au revoir!"		)





class 				UpperCAmelCase (    unittest.TestCase    ):




	'''simple docstring'''





	def 							UpperCamelCase_    (			self   :					int					):
					# 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 				UpperCAmelCase (    unittest.TestCase    ):




	'''simple docstring'''





	@unittest.mock.patch("sys.stdout"				,new_callable=io.StringIO					)
	def 							UpperCamelCase_    (			self   :					int				,A   :					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 							UpperCamelCase_    (			self   :					Optional[Any]				,A   :					int					):
					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 							UpperCamelCase_    (			self   :					List[Any]				,A   :					List[Any]					):
					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 							UpperCamelCase_    (			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 				UpperCAmelCase (    __SCREAMING_SNAKE_CASE    ):




						'''simple docstring'''





						pass





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






	@require_tf
	def 							UpperCamelCase_    (			self   :					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 				UpperCAmelCase (    __SCREAMING_SNAKE_CASE    ):




						'''simple docstring'''





						pass





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







	@require_flax
	def 							UpperCamelCase_    (			self   :					List[Any]					):
					# Flax models don't have labels
					self.assertEqual(find_labels(A					)				,[]					)
					self.assertEqual(find_labels(A					)				,[]					)
					self.assertEqual(find_labels(A					)				,[]					)





					class 				UpperCAmelCase (    __SCREAMING_SNAKE_CASE    ):




						'''simple docstring'''





						pass





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






"""simple docstring"""






import operator as op







def 	_snake_case     (							lowercase__						):
				_lowerCamelCase	:     Dict       =       []
				_lowerCamelCase	:     List[str]       =       lambda lowercase__				,       lowercase__						: int(x / y						)  # noqa: E731 integer division operation
				_lowerCamelCase	:     Optional[int]       =       {
				    '^': op.pow,
				    '*': op.mul,
				    '/': div,
				    '+': op.add,
				    '-': op.sub,
				}  # operators & their respective operation

				# print table header
				print('Symbol'.center(8						)				,       'Action'.center(12						)				,       'Stack'				,       sep=' | '						)
				print('-' * (30 + len(lowercase__						))						)

				for x in post_fix:
								if x.isdigit():  # if x in digit
												stack.append(lowercase__						)  # append x to stack
												# output in tabular format
												print(x.rjust(8						)				,       ('push(' + x + ')').ljust(12						)				,       ','.join(lowercase__						)				,       sep=' | '						)
								else:
												_lowerCamelCase	:     int       =       stack.pop()  # pop stack
												# output in tabular format
												print(''.rjust(8						)				,       ('pop(' + b + ')').ljust(12						)				,       ','.join(lowercase__						)				,       sep=' | '						)

												_lowerCamelCase	:     Tuple       =       stack.pop()  # pop stack
												# output in tabular format
												print(''.rjust(8						)				,       ('pop(' + a + ')').ljust(12						)				,       ','.join(lowercase__						)				,       sep=' | '						)

												stack.append(
												    str(opr[x](int(lowercase__						)				,       int(lowercase__						)						)						)						)  # evaluate the 2 values popped from stack & push result to stack
												# output in tabular format
												print(
												    x.rjust(8						)				,       ('push(' + a + x + b + ')').ljust(12						)				,       ','.join(lowercase__						)				,       sep=' | '				,       )

				return int(stack[0]						)


if __name__ == "__main__":
			lowercase__			=		input("""\n\nEnter a Postfix Equation (space separated) = """).split(""" """)
			print("""\n\tResult = """, solve(Postfix))