



from __future__ import annotations

from typing import Generic, TypeVar

UpperCamelCase_      			=  TypeVar("T")







class 				a_    (						Generic[T]							):

						def __init__(       self      :List[Any]  ,		_lowercase      :T)						->   Optional[int]:
												UpperCAmelCase_					=	data  # Assign data
												UpperCAmelCase_					=	None  # Initialize next as null
												UpperCAmelCase_					=	None  # Initialize prev as null







class 				a_    (						Generic[T]							):

						def __init__(       self      :int)						->   None:
												UpperCAmelCase_					=	None

						def       __a			(       self      :Union[str, Any]  ,		_lowercase      :T)						->   None:
												if self.head is None:
																		UpperCAmelCase_					=	Node(_lowercase)
												else:
																		UpperCAmelCase_					=	Node(_lowercase)
																		UpperCAmelCase_					=	new_node
																		UpperCAmelCase_					=	self.head
																		UpperCAmelCase_					=	None
																		UpperCAmelCase_					=	new_node

						def       __a			(       self      :int)						->   T | None:
												if self.head is None:
																		return None
												else:
																		assert self.head is not None
																		UpperCAmelCase_					=	self.head.data
																		UpperCAmelCase_					=	self.head.next
																		if self.head is not None:
																								UpperCAmelCase_					=	None
																		return temp

						def       __a			(       self      :int)						->   T | None:
												return self.head.data if self.head is not None else None

						def __len__(       self      :str)						->   int:
												UpperCAmelCase_					=	self.head
												UpperCAmelCase_					=	0
												while temp is not None:
																		count += 1
																		UpperCAmelCase_					=	temp.next
												return count

						def       __a			(       self      :Dict)						->   bool:
												return self.head is None




						def       __a			(       self      :List[str])						->   None:
												print('''stack elements are:''')
												UpperCAmelCase_					=	self.head
												while temp is not None:
																		print(temp.data  ,		end='''->''')
																		UpperCAmelCase_					=	temp.next


# Code execution starts here
if __name__ == "__main__":
							# Start with the empty stack
							UpperCamelCase_      			=  Stack()

							# Insert 4 at the beginning. So stack becomes 4->None
							print("Stack operations using Doubly LinkedList")
							stack.push(4)

							# Insert 5 at the beginning. So stack becomes 4->5->None
							stack.push(5)

							# Insert 6 at the beginning. So stack becomes 4->5->6->None
							stack.push(6)

							# Insert 7 at the beginning. So stack becomes 4->5->6->7->None
							stack.push(7)

							# Print the stack
							stack.print_stack()

							# Print the top element
							print("\nTop element is ", stack.top())

							# Print the stack size
							print("Size of the stack is ", len(stack))

							# pop the top element
							stack.pop()

							# pop the top element
							stack.pop()

							# two elements have now been popped off
							stack.print_stack()

							# Print True if the stack is empty else False
							print("\nstack is empty:", stack.is_empty())










import os
import tempfile
import unittest
from typing import List

from transformers.models.esm.tokenization_esm import VOCAB_FILES_NAMES, EsmTokenizer
from transformers.testing_utils import require_tokenizers
from transformers.tokenization_utils import PreTrainedTokenizer
from transformers.tokenization_utils_base import PreTrainedTokenizerBase







@require_tokenizers
class 				a_    (						unittest.TestCase							):
						UpperCamelCase__ :		Any										=EsmTokenizer

						def       __a			(       self      :Optional[int])						->   Optional[int]:
												super().setUp()
												UpperCAmelCase_					=	tempfile.mkdtemp()
												# fmt: off
												UpperCAmelCase_					=	["<cls>", "<pad>", "<eos>", "<unk>", "L", "A", "G", "V", "S", "E", "R", "T", "I", "D", "P", "K", "Q", "N", "F", "Y", "M", "H", "W", "C", "X", "B", "U", "Z", "O", ".", "-", "<null_1>", "<mask>"]  # noqa: E501
												# fmt: on
												UpperCAmelCase_					=	os.path.join(self.tmpdirname  ,		VOCAB_FILES_NAMES['''vocab_file'''])
												with open(self.vocab_file  ,		'''w'''  ,		encoding='''utf-8''') as vocab_writer:
																		vocab_writer.write(''''''.join([x + '''\n''' for x in vocab_tokens]))

						def       __a			(       self      :List[str]  ,		**_lowercase      :Union[str, Any])						->   List[PreTrainedTokenizerBase]:
												return [self.get_tokenizer(**_lowercase)]

						def       __a			(       self      :Optional[int]  ,		**_lowercase      :List[str])						->   PreTrainedTokenizer:
												return self.tokenizer_class.from_pretrained(self.tmpdirname  ,		**_lowercase)

						def       __a			(       self      :int)						->   Any:
												UpperCAmelCase_					=	self.tokenizer_class(self.vocab_file)

												UpperCAmelCase_					=	tokenizer.tokenize('''LAGVS''')
												self.assertListEqual(_lowercase  ,		['''L''', '''A''', '''G''', '''V''', '''S'''])
												self.assertListEqual(tokenizer.convert_tokens_to_ids(_lowercase)  ,		[4, 5, 6, 7, 8])

						def       __a			(       self      :List[Any])						->   Optional[int]:
												UpperCAmelCase_					=	self.tokenizer_class(self.vocab_file)

												UpperCAmelCase_					=	'''LAGVS'''
												self.assertListEqual(tokenizer.encode(_lowercase)  ,		[0, 4, 5, 6, 7, 8, 2])

						def       __a			(       self      :Tuple)						->   Union[str, Any]:
												UpperCAmelCase_					=	self.tokenizer_class(self.vocab_file)

												UpperCAmelCase_					=	['''LAGVS''', '''WCB''']
												UpperCAmelCase_					=	tokenizer(_lowercase  ,		padding=_lowercase)['''input_ids''']

												self.assertListEqual(_lowercase  ,		[[0, 4, 5, 6, 7, 8, 2], [0, 22, 23, 25, 2]])

						def       __a			(       self      :str)						->   Any:
												UpperCAmelCase_					=	self.tokenizer_class(self.vocab_file)

												UpperCAmelCase_					=	['''LAGVS''', '''WCB''']
												UpperCAmelCase_					=	tokenizer(_lowercase  ,		padding=_lowercase)['''input_ids''']

												self.assertListEqual(_lowercase  ,		[[0, 4, 5, 6, 7, 8, 2], [0, 22, 23, 25, 2, 1, 1]])




						def       __a			(       self      :Dict)						->   Optional[int]:
												UpperCAmelCase_					=	self.get_tokenizers(fast=_lowercase)
												for tokenizer in tokenizers:
																		with self.subTest(f"{tokenizer.__class__.__name__}"):
																								UpperCAmelCase_					=	'''<unk>'''
																								UpperCAmelCase_					=	'''<mask>'''

																								UpperCAmelCase_					=	tokenizer.tokenize(_lowercase)
																								UpperCAmelCase_					=	tokenizer.tokenize(_lowercase)

																								self.assertEqual(len(_lowercase)  ,		1)
																								self.assertEqual(len(_lowercase)  ,		1)
																								self.assertEqual(token_a[0]  ,		_lowercase)
																								self.assertEqual(token_a[0]  ,		_lowercase)





