


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__     					=			DUMMY_UNKNOWN_IDENTIFIER
# An actual model hosted on huggingface.co

SCREAMING_SNAKE_CASE__     					=			"main"
# Default branch name
SCREAMING_SNAKE_CASE__     					=			"f2c752cfc5c0ab6f4bdec59acea69eefbee381c2"
# One particular commit (not the top of `main`)
SCREAMING_SNAKE_CASE__     					=			"aaaaaaa"
# This commit does not exist, so we should 404.

SCREAMING_SNAKE_CASE__     					=			"d9e9f15bc825e4b2c9249e9578f884bbcb5e3684"
# Sha-1 of config.json on the top of `main`, for checking purposes
SCREAMING_SNAKE_CASE__     					=			"4b243c475af8d0a7754e87d7d096c92e5199ec2fe168a2ee7998e3b8e9bcb1d3"


@contextlib.contextmanager
def     lowercase	(    ):



		'''simple docstring'''




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


@contextlib.contextmanager
def     lowercase	(    ):



		'''simple docstring'''




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



class 						_UpperCAmelCase      (     unittest.TestCase							):






		def _snake_case		(						self				:     Optional[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 						_UpperCAmelCase      (     unittest.TestCase							):






		@unittest.mock.patch("sys.stdout"   ,  new_callable=io.StringIO)
		def _snake_case		(						self				:     Optional[Any]   ,  UpperCAmelCase				:     Optional[int]):
				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 _snake_case		(						self				:     List[Any]   ,  UpperCAmelCase				:     Union[str, Any]):
				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 _snake_case		(						self				:     Union[str, Any]   ,  UpperCAmelCase				:     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 _snake_case		(						self				:     Optional[int]):
				self.assertEqual(find_labels(UpperCAmelCase)   ,  ["labels"])
				self.assertEqual(find_labels(UpperCAmelCase)   ,  ["labels", "next_sentence_label"])
				self.assertEqual(find_labels(UpperCAmelCase)   ,  ["start_positions", "end_positions"])



				class 						_UpperCAmelCase      (     lowercase							):
						pass




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






		@require_tf
		def _snake_case		(						self				:     Dict):
				self.assertEqual(find_labels(UpperCAmelCase)   ,  ["labels"])
				self.assertEqual(find_labels(UpperCAmelCase)   ,  ["labels", "next_sentence_label"])
				self.assertEqual(find_labels(UpperCAmelCase)   ,  ["start_positions", "end_positions"])



				class 						_UpperCAmelCase      (     lowercase							):
						pass




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







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



				class 						_UpperCAmelCase      (     lowercase							):
						pass




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










def     lowercase	(    a = 50 ):



		'''simple docstring'''




		SCREAMING_SNAKE_CASE_				:int				     =						[1] * (length + 1)

		for row_length in range(3     , length + 1 ):
				for block_length in range(3     , row_length + 1 ):
						for block_start in range(row_length - block_length ):
								ways_number[row_length] += ways_number[
								    row_length - block_start - block_length - 1
								]

						ways_number[row_length] += 1

		return ways_number[length]


if __name__ == "__main__":
		print(F'''{solution() = }''')






