



import os
import shutil
import unittest
from unittest.mock import patch

from transformers.testing_utils import CaptureStd, is_pt_tf_cross_test, require_torch


class 	lowerCamelCase__ (		unittest.TestCase   ):


						@patch("sys.argv"      ,       ["fakeprogrampath", "env"]			)
						def   _lowerCamelCase			( self						:  List[str]			):
													# test transformers-cli env
													import transformers.commands.transformers_cli

													with CaptureStd() as cs:
																				transformers.commands.transformers_cli.main()
													self.assertIn("Python version"      ,       cs.out			)
													self.assertIn("Platform"      ,       cs.out			)
													self.assertIn("Using distributed or parallel set-up in script?"      ,       cs.out			)


						@is_pt_tf_cross_test
						@patch(
						    "sys.argv"      ,       ["fakeprogrampath", "pt-to-tf", "--model-name", "hf-internal-testing/tiny-random-gptj", "--no-pr"]			)
						def   _lowerCamelCase			( self						:  List[Any]			):
													import transformers.commands.transformers_cli

													shutil.rmtree("/tmp/hf-internal-testing/tiny-random-gptj"      ,       ignore_errors=_a			)  # cleans potential past runs
													transformers.commands.transformers_cli.main()

													# The original repo has no TF weights -- if they exist, they were created by the CLI
													self.assertTrue(os.path.exists("/tmp/hf-internal-testing/tiny-random-gptj/tf_model.h5"			)			)


						@require_torch
						@patch("sys.argv"      ,       ["fakeprogrampath", "download", "hf-internal-testing/tiny-random-gptj", "--cache-dir", "/tmp"]			)
						def   _lowerCamelCase			( self						:  Any			):
													import transformers.commands.transformers_cli

													# # remove any previously downloaded model to start clean
													shutil.rmtree("/tmp/models--hf-internal-testing--tiny-random-gptj"      ,       ignore_errors=_a			)

													# run the command
													transformers.commands.transformers_cli.main()

													# check if the model files are downloaded correctly on /tmp/models--hf-internal-testing--tiny-random-gptj
													self.assertTrue(os.path.exists("/tmp/models--hf-internal-testing--tiny-random-gptj/blobs"			)			)
													self.assertTrue(os.path.exists("/tmp/models--hf-internal-testing--tiny-random-gptj/refs"			)			)
													self.assertTrue(os.path.exists("/tmp/models--hf-internal-testing--tiny-random-gptj/snapshots"			)			)







						@require_torch
						@patch(
						    "sys.argv"      ,       [
						        "fakeprogrampath",
						        "download",
						        "hf-internal-testing/test_dynamic_model_with_tokenizer",
						        "--trust-remote-code",
						        "--cache-dir",
						        "/tmp",
						    ]      ,       )
						def   _lowerCamelCase			( self						:  List[str]			):
													import transformers.commands.transformers_cli

													# # remove any previously downloaded model to start clean
													shutil.rmtree("/tmp/models--hf-internal-testing--test_dynamic_model_with_tokenizer"      ,       ignore_errors=_a			)

													# run the command
													transformers.commands.transformers_cli.main()

													# check if the model files are downloaded correctly on /tmp/models--hf-internal-testing--test_dynamic_model_with_tokenizer
													self.assertTrue(os.path.exists("/tmp/models--hf-internal-testing--test_dynamic_model_with_tokenizer/blobs"			)			)
													self.assertTrue(os.path.exists("/tmp/models--hf-internal-testing--test_dynamic_model_with_tokenizer/refs"			)			)
													self.assertTrue(
													    os.path.exists("/tmp/models--hf-internal-testing--test_dynamic_model_with_tokenizer/snapshots"			)			)










from __future__ import annotations

from typing import Generic, TypeVar

__UpperCAmelCase						  =     TypeVar('''T''')


class 	lowerCamelCase__ (		Generic[T]   ):


						def __init__( self						:  int      ,       _a						:  T			):
													a__:       int											=data  # Assign data
													a__:       Node[T] | None											=None  # Initialize next as null
													a__:       Node[T] | None											=None  # Initialize prev as null


class 	lowerCamelCase__ (		Generic[T]   ):


						def __init__( self						:  Optional[Any]			):
													a__:       Node[T] | None											=None


						def   _lowerCamelCase			( self						:  List[Any]      ,       _a						:  T			):
													if self.head is None:
																				a__:       Dict											=Node(_a			)
													else:
																				a__:       int											=Node(_a			)
																				a__:       Optional[Any]											=new_node
																				a__:       int											=self.head
																				a__:       int											=None
																				a__:       Any											=new_node


						def   _lowerCamelCase			( self						:  Tuple			):
													if self.head is None:
																				return None
													else:
																				assert self.head is not None
																				a__:       Optional[int]											=self.head.data
																				a__:       Union[str, Any]											=self.head.next
																				if self.head is not None:
																											a__:       str											=None
																				return temp


						def   _lowerCamelCase			( self						:  int			):
													return self.head.data if self.head is not None else None


						def __len__( self						:  Union[str, Any]			):
													a__:       Tuple											=self.head
													a__:       int											=0
													while temp is not None:
																				count += 1
																				a__:       List[str]											=temp.next
													return count


						def   _lowerCamelCase			( self						:  int			):
													return self.head is None







						def   _lowerCamelCase			( self						:  Union[str, Any]			):
													print("stack elements are:"			)
													a__:       Optional[int]											=self.head
													while temp is not None:
																				print(temp.data      ,       end="->"			)
																				a__:       Union[str, Any]											=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())





