


from typing import TYPE_CHECKING

from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available, is_vision_available


_SCREAMING_SNAKE_CASE    :				Any       =					{
    "configuration_deta": ["DETA_PRETRAINED_CONFIG_ARCHIVE_MAP", "DetaConfig"],
}

try:
 if not is_vision_available():
  raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
 pass
else:
 _SCREAMING_SNAKE_CASE    :				Optional[int]       =					["DetaImageProcessor"]

try:
 if not is_torch_available():
  raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
 pass
else:
 _SCREAMING_SNAKE_CASE    :				Tuple       =					[
     "DETA_PRETRAINED_MODEL_ARCHIVE_LIST",
     "DetaForObjectDetection",
     "DetaModel",
     "DetaPreTrainedModel",
 ]


if TYPE_CHECKING:
 from .configuration_deta import DETA_PRETRAINED_CONFIG_ARCHIVE_MAP, DetaConfig

 try:
  if not is_vision_available():
   raise OptionalDependencyNotAvailable()
 except OptionalDependencyNotAvailable:
  pass
 else:
  from .image_processing_deta import DetaImageProcessor

 try:
  if not is_torch_available():
   raise OptionalDependencyNotAvailable()
 except OptionalDependencyNotAvailable:
  pass
 else:
  from .modeling_deta import (
      DETA_PRETRAINED_MODEL_ARCHIVE_LIST,
      DetaForObjectDetection,
      DetaModel,
      DetaPreTrainedModel,
  )

else:
 import sys

 _SCREAMING_SNAKE_CASE    :				int       =					_LazyModule(__name__, globals()["__file__"], _import_structure, module_spec=__spec__)








import torch

from accelerate import Accelerator, DistributedType

class 						A__      :







    """simple docstring"""

    def __enter__( self					):
         if self.enabled:
              snake_case					=       self.model.no_sync()
              self.model_sync_obj.__enter__()

         return self
    def __exit__( self    ,      __snake_case    ,      __snake_case    ,      __snake_case					):
         if self.enabled:
              # Average all models on exit
              self._sync_and_avg_model_params()
              self.model_sync_obj.__exit__(__snake_case    ,      __snake_case    ,      __snake_case					)
    def __init__( self    ,      __snake_case    ,      __snake_case    ,      __snake_case    ,      __snake_case = True					):
         if accelerator.distributed_type not in [
             DistributedType.NO,
             DistributedType.MULTI_CPU,
             DistributedType.MULTI_GPU,
         ]:
              raise NotImplementedError('''LocalSGD is supported only for CPUs and GPUs (no DeepSpeed or MegatronLM)'''					)
         snake_case					=       enabled and accelerator.distributed_type != DistributedType.NO
         snake_case					=       0
         if self.enabled:
              snake_case					=       accelerator
              snake_case					=       model
              snake_case					=       local_sgd_steps
    def 	a_    ( self					):
         self.num_steps += 1
         if not self.enabled:
              return

         if self.num_steps % self.local_sgd_steps == 0:
              self._sync_and_avg_model_params()




    def 	a_    ( self					):
         self.accelerator.wait_for_everyone()
         with self.accelerator.autocast():
              for param in self.model.parameters():
                   snake_case					=       self.accelerator.reduce(param.data    ,      reduction='''mean'''					)




