from typing import TYPE_CHECKING

from ...utils import (
    OptionalDependencyNotAvailable,
    _LazyModule,
    is_flax_available,
    is_tf_available,
    is_torch_available,
)


SCREAMING_SNAKE_CASE__		:       Optional[int]       						=       {"configuration_encoder_decoder": ["EncoderDecoderConfig"]}

try:
      if not is_torch_available():
            raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
      pass
else:
      SCREAMING_SNAKE_CASE__		:       Union[str, Any]       						=       ["EncoderDecoderModel"]

try:
      if not is_tf_available():
            raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
      pass
else:
      SCREAMING_SNAKE_CASE__		:       str       						=       ["TFEncoderDecoderModel"]

try:
      if not is_flax_available():
            raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
      pass
else:
      SCREAMING_SNAKE_CASE__		:       List[str]       						=       ["FlaxEncoderDecoderModel"]

if TYPE_CHECKING:
      from .configuration_encoder_decoder import EncoderDecoderConfig

      try:
            if not is_torch_available():
                  raise OptionalDependencyNotAvailable()
      except OptionalDependencyNotAvailable:
            pass
      else:
            from .modeling_encoder_decoder import EncoderDecoderModel

      try:
            if not is_tf_available():
                  raise OptionalDependencyNotAvailable()
      except OptionalDependencyNotAvailable:
            pass
      else:
            from .modeling_tf_encoder_decoder import TFEncoderDecoderModel

      try:
            if not is_flax_available():
                  raise OptionalDependencyNotAvailable()
      except OptionalDependencyNotAvailable:
            pass
      else:
            from .modeling_flax_encoder_decoder import FlaxEncoderDecoderModel

else:
      import sys

      SCREAMING_SNAKE_CASE__		:       Dict       						=       _LazyModule(__name__, globals()["__file__"], _import_structure, module_spec=__spec__)










from torch import nn


def 							__snake_case							(    lowerCAmelCase_	)				->						Tuple:
    if act_fn in ["swish", "silu"]:
        return nn.SiLU()
    elif act_fn == "mish":
        return nn.Mish()
    elif act_fn == "gelu":
        return nn.GELU()
    else:
        raise ValueError(f'''Unsupported activation function: {act_fn}'''	)
