



"""simple docstring"""




from ...configuration_utils import PretrainedConfig
from ...utils import logging


_UpperCamelCase:					Tuple     				=	logging.get_logger(__name__)

_UpperCamelCase:					List[str]     				=	{
    'facebook/regnet-y-040': 'https://huggingface.co/facebook/regnet-y-040/blob/main/config.json',
}


class 	a__		(    SCREAMING_SNAKE_CASE__  ):
   _lowerCamelCase       				=					'regnet'
   _lowerCamelCase       				=					['x', 'y']


   def __init__(				self   :				Union[str, Any],  lowerCAmelCase   :				Union[str, Any]=3,  lowerCAmelCase   :				Tuple=32,  lowerCAmelCase   :				Optional[int]=[128, 192, 512, 1088],  lowerCAmelCase   :				Optional[int]=[2, 6, 12, 2],  lowerCAmelCase   :				str=64,  lowerCAmelCase   :				List[str]="y",  lowerCAmelCase   :				Optional[int]="relu",  **lowerCAmelCase   :				List[Any],  )     ->							Union[str, Any]:
         super().__init__(**lowerCAmelCase      )
         if layer_type not in self.layer_types:
               raise ValueError(f'''layer_type={layer_type} is not one of {','.join(self.layer_types      )}'''      )
         lowercase	:   str											= num_channels
         lowercase	:   str											= embedding_size
         lowercase	:   int											= hidden_sizes
         lowercase	:   Tuple											= depths
         lowercase	:   str											= groups_width
         lowercase	:   List[str]											= layer_type
         lowercase	:   Optional[int]											= hidden_act
         # always downsample in the first stage
         lowercase	:   Optional[Any]											= True





"""simple docstring"""




from __future__ import annotations

from typing import Generic, TypeVar

_UpperCamelCase:					str     				=	TypeVar('T')


class 	a__		(    Generic[T]  ):


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




class 	a__		(    Generic[T]  ):


   def __init__(				self   :				Optional[int]      )     ->							None:
         lowercase	:   Node[T] | None											= None


   def 							lowercase					(				self   :				Any,  lowerCAmelCase   :				T      )     ->							None:
         if self.head is None:
               lowercase	:   Tuple											= Node(lowerCAmelCase      )
         else:
               lowercase	:   Dict											= Node(lowerCAmelCase      )
               lowercase	:   str											= new_node
               lowercase	:   int											= self.head
               lowercase	:   List[str]											= None
               lowercase	:   List[str]											= new_node


   def 							lowercase					(				self   :				Dict      )     ->							T | None:
         if self.head is None:
               return None
         else:
               assert self.head is not None
               lowercase	:   Optional[int]											= self.head.data
               lowercase	:   Any											= self.head.next
               if self.head is not None:
                     lowercase	:   Optional[Any]											= None
               return temp


   def 							lowercase					(				self   :				List[Any]      )     ->							T | None:
         return self.head.data if self.head is not None else None


   def __len__(				self   :				int      )     ->							int:
         lowercase	:   Any											= self.head
         lowercase	:   List[Any]											= 0
         while temp is not None:
               count += 1
               lowercase	:   Any											= temp.next
         return count


   def 							lowercase					(				self   :				List[Any]      )     ->							bool:
         return self.head is None






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


# Code execution starts here
if __name__ == "__main__":
     # Start with the empty stack
     _UpperCamelCase:					Stack[int]     				=	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())
