code: 
  from typing import TYPE_CHECKING
  
  from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available, is_vision_available
  
  
  snake_case				:	Dict							   =						{
      "configuration_deformable_detr": ["DEFORMABLE_DETR_PRETRAINED_CONFIG_ARCHIVE_MAP", "DeformableDetrConfig"],
  }
  
  try:
  				if not is_vision_available():
  								raise OptionalDependencyNotAvailable()
  except OptionalDependencyNotAvailable:
  				pass
  else:
  				snake_case				:	Any							   =						["DeformableDetrFeatureExtractor"]
  				snake_case				:	str							   =						["DeformableDetrImageProcessor"]
  
  try:
  				if not is_torch_available():
  								raise OptionalDependencyNotAvailable()
  except OptionalDependencyNotAvailable:
  				pass
  else:
  				snake_case				:	Dict							   =						[
  				    "DEFORMABLE_DETR_PRETRAINED_MODEL_ARCHIVE_LIST",
  				    "DeformableDetrForObjectDetection",
  				    "DeformableDetrModel",
  				    "DeformableDetrPreTrainedModel",
  				]
  
  
  if TYPE_CHECKING:
  				from .configuration_deformable_detr import DEFORMABLE_DETR_PRETRAINED_CONFIG_ARCHIVE_MAP, DeformableDetrConfig
  
  				try:
  								if not is_vision_available():
  												raise OptionalDependencyNotAvailable()
  				except OptionalDependencyNotAvailable:
  								pass
  				else:
  								from .feature_extraction_deformable_detr import DeformableDetrFeatureExtractor
  								from .image_processing_deformable_detr import DeformableDetrImageProcessor
  
  				try:
  								if not is_torch_available():
  												raise OptionalDependencyNotAvailable()
  				except OptionalDependencyNotAvailable:
  								pass
  				else:
  								from .modeling_deformable_detr import (
  								    DEFORMABLE_DETR_PRETRAINED_MODEL_ARCHIVE_LIST,
  								    DeformableDetrForObjectDetection,
  								    DeformableDetrModel,
  								    DeformableDetrPreTrainedModel,
  								)
  
  else:
  				import sys
  
  				snake_case				:	int							   =						_LazyModule(__name__, globals()["__file__"], _import_structure, module_spec=__spec__)
  
style_context: 
  def 						lowerCAmelCase_		(      _snake_case   :						int     )       ->	int:
  
  
  
  
  
  
  
  	'''simple docstring'''
  
  
  	if not isinstance(_snake_case   ,     _snake_case     ) or number < 0:
  		raise ValueError("Input must be a non-negative integer"     )
  
  	__magic_name__	:	Dict			     =  number & ~(number - 1)
  	__magic_name__	:	Optional[Any]			     =  0
  	while intermediate:
  		intermediate >>= 1
  		index += 1
  	return index - 1
  
  
  if __name__ == "__main__":
  				import doctest
  
  				doctest.testmod(verbose=True)
  