



UpperCAmelCase_									=							{"a": ["c", "b"], "b": ["d", "e"], "c": [], "d": [], "e": []}
UpperCAmelCase_									=							["a", "b", "c", "d", "e"]
def 							UpperCAmelCase__		(				_SCREAMING_SNAKE_CASE   :	Optional[Any]     ,				_SCREAMING_SNAKE_CASE   :	Dict     ,				_SCREAMING_SNAKE_CASE   :	Union[str, Any]				)->Optional[int]:
      _lowerCAmelCase 			=  start
      # add current to visited
      visited.append(_SCREAMING_SNAKE_CASE				)
      _lowerCAmelCase 			=  edges[current]
      for neighbor in neighbors:
            # if neighbor not in visited, visit
            if neighbor not in visited:
                  _lowerCAmelCase 			=  topological_sort(_SCREAMING_SNAKE_CASE     ,				_SCREAMING_SNAKE_CASE     ,				_SCREAMING_SNAKE_CASE				)
    # if all neighbors visited add current to sort
      sort.append(_SCREAMING_SNAKE_CASE				)
      # if all vertices haven't been visited select a new one to visit
      if len(_SCREAMING_SNAKE_CASE				) != len(_SCREAMING_SNAKE_CASE				):
            for vertice in vertices:
                  if vertice not in visited:
                        _lowerCAmelCase 			=  topological_sort(_SCREAMING_SNAKE_CASE     ,				_SCREAMING_SNAKE_CASE     ,				_SCREAMING_SNAKE_CASE				)
    # return sort
      return sort


if __name__ == "__main__":
    UpperCAmelCase_									=							topological_sort("a", [], [])
    print(sort)




from tempfile import TemporaryDirectory
from unittest import TestCase
from unittest.mock import MagicMock, patch

from transformers import AutoModel, TFAutoModel
from transformers.onnx import FeaturesManager
from transformers.testing_utils import SMALL_MODEL_IDENTIFIER, require_tf, require_torch





@require_torch
@require_tf
class 		UpperCAmelCase						(						snake_case_				):





   def 	__lowerCAmelCase							(	self			):
         _lowerCAmelCase 			=  SMALL_MODEL_IDENTIFIER
         _lowerCAmelCase 			=  '''pt'''
         _lowerCAmelCase 			=  '''tf'''





   def 	__lowerCAmelCase							(	self       ,     _lowerCAmelCase			):
         _lowerCAmelCase 			=  AutoModel.from_pretrained(self.test_model			)
         model_pt.save_pretrained(_lowerCAmelCase			)





   def 	__lowerCAmelCase							(	self       ,     _lowerCAmelCase			):
         _lowerCAmelCase 			=  TFAutoModel.from_pretrained(self.test_model       ,     from_pt=_lowerCAmelCase			)
         model_tf.save_pretrained(_lowerCAmelCase			)





   def 	__lowerCAmelCase							(	self			):
         _lowerCAmelCase 			=  '''mock_framework'''

         # Framework provided - return whatever the user provides
         _lowerCAmelCase 			=  FeaturesManager.determine_framework(self.test_model       ,     _lowerCAmelCase			)
         self.assertEqual(_lowerCAmelCase       ,     _lowerCAmelCase			)

         # Local checkpoint and framework provided - return provided framework
         # PyTorch checkpoint
         with TemporaryDirectory() as local_pt_ckpt:
               self._setup_pt_ckpt(_lowerCAmelCase			)
               _lowerCAmelCase 			=  FeaturesManager.determine_framework(_lowerCAmelCase       ,     _lowerCAmelCase			)
               self.assertEqual(_lowerCAmelCase       ,     _lowerCAmelCase			)

         # TensorFlow checkpoint
         with TemporaryDirectory() as local_tf_ckpt:
               self._setup_tf_ckpt(_lowerCAmelCase			)
               _lowerCAmelCase 			=  FeaturesManager.determine_framework(_lowerCAmelCase       ,     _lowerCAmelCase			)
               self.assertEqual(_lowerCAmelCase       ,     _lowerCAmelCase			)





   def 	__lowerCAmelCase							(	self			):
         # PyTorch checkpoint
         with TemporaryDirectory() as local_pt_ckpt:
               self._setup_pt_ckpt(_lowerCAmelCase			)
               _lowerCAmelCase 			=  FeaturesManager.determine_framework(_lowerCAmelCase			)
               self.assertEqual(_lowerCAmelCase       ,     self.framework_pt			)

         # TensorFlow checkpoint
         with TemporaryDirectory() as local_tf_ckpt:
               self._setup_tf_ckpt(_lowerCAmelCase			)
               _lowerCAmelCase 			=  FeaturesManager.determine_framework(_lowerCAmelCase			)
               self.assertEqual(_lowerCAmelCase       ,     self.framework_tf			)

         # Invalid local checkpoint
         with TemporaryDirectory() as local_invalid_ckpt:
               with self.assertRaises(_lowerCAmelCase			):
                     _lowerCAmelCase 			=  FeaturesManager.determine_framework(_lowerCAmelCase			)





   def 	__lowerCAmelCase							(	self			):
         _lowerCAmelCase 			=  MagicMock(return_value=_lowerCAmelCase			)
         with patch('''transformers.onnx.features.is_tf_available'''       ,     _lowerCAmelCase			):
               _lowerCAmelCase 			=  FeaturesManager.determine_framework(self.test_model			)
               self.assertEqual(_lowerCAmelCase       ,     self.framework_pt			)

         # PyTorch not in environment -> use TensorFlow
         _lowerCAmelCase 			=  MagicMock(return_value=_lowerCAmelCase			)
         with patch('''transformers.onnx.features.is_torch_available'''       ,     _lowerCAmelCase			):
               _lowerCAmelCase 			=  FeaturesManager.determine_framework(self.test_model			)
               self.assertEqual(_lowerCAmelCase       ,     self.framework_tf			)

         # Both in environment -> use PyTorch
         _lowerCAmelCase 			=  MagicMock(return_value=_lowerCAmelCase			)
         _lowerCAmelCase 			=  MagicMock(return_value=_lowerCAmelCase			)
         with patch('''transformers.onnx.features.is_tf_available'''       ,     _lowerCAmelCase			), patch(
             '''transformers.onnx.features.is_torch_available'''       ,     _lowerCAmelCase			):
               _lowerCAmelCase 			=  FeaturesManager.determine_framework(self.test_model			)
               self.assertEqual(_lowerCAmelCase       ,     self.framework_pt			)

         # Both not in environment -> raise error
         _lowerCAmelCase 			=  MagicMock(return_value=_lowerCAmelCase			)
         _lowerCAmelCase 			=  MagicMock(return_value=_lowerCAmelCase			)
         with patch('''transformers.onnx.features.is_tf_available'''       ,     _lowerCAmelCase			), patch(
             '''transformers.onnx.features.is_torch_available'''       ,     _lowerCAmelCase			):
               with self.assertRaises(_lowerCAmelCase			):
                     _lowerCAmelCase 			=  FeaturesManager.determine_framework(self.test_model			)