


import unittest

from transformers.utils.backbone_utils import (
    BackboneMixin,
    get_aligned_output_features_output_indices,
    verify_out_features_out_indices,
)







class 	snake_case_       (unittest.TestCase				):
					def 			lowerCamelCase__(				self       :int				) ->   List[str]:
												a__					=					['a', 'b', 'c']

												# Defaults to last layer if both are None
												a__				, a__					=					get_aligned_output_features_output_indices(__snake_case      ,__snake_case      ,__snake_case				)
												self.assertEqual(__snake_case      ,['c']				)
												self.assertEqual(__snake_case      ,[2]				)

												# Out indices set to match out features
												a__				, a__					=					get_aligned_output_features_output_indices(['a', 'c']      ,__snake_case      ,__snake_case				)
												self.assertEqual(__snake_case      ,['a', 'c']				)
												self.assertEqual(__snake_case      ,[0, 2]				)

												# Out features set to match out indices
												a__				, a__					=					get_aligned_output_features_output_indices(__snake_case      ,[0, 2]      ,__snake_case				)
												self.assertEqual(__snake_case      ,['a', 'c']				)
												self.assertEqual(__snake_case      ,[0, 2]				)

												# Out features selected from negative indices
												a__				, a__					=					get_aligned_output_features_output_indices(__snake_case      ,[-3, -1]      ,__snake_case				)
												self.assertEqual(__snake_case      ,['a', 'c']				)
												self.assertEqual(__snake_case      ,[-3, -1]				)
					def 			lowerCamelCase__(				self       :str				) ->   Any:
												# Stage names must be set
												with self.assertRaises(__snake_case				):
																			verify_out_features_out_indices(['a', 'b']      ,(0, 1)      ,__snake_case				)

												# Out features must be a list
												with self.assertRaises(__snake_case				):
																			verify_out_features_out_indices(('a', 'b')      ,(0, 1)      ,['a', 'b']				)

												# Out features must be a subset of stage names
												with self.assertRaises(__snake_case				):
																			verify_out_features_out_indices(['a', 'b']      ,(0, 1)      ,['a']				)

												# Out indices must be a list or tuple
												with self.assertRaises(__snake_case				):
																			verify_out_features_out_indices(__snake_case      ,0      ,['a', 'b']				)

												# Out indices must be a subset of stage names
												with self.assertRaises(__snake_case				):
																			verify_out_features_out_indices(__snake_case      ,(0, 1)      ,['a']				)

												# Out features and out indices must be the same length
												with self.assertRaises(__snake_case				):
																			verify_out_features_out_indices(['a', 'b']      ,(0,)      ,['a', 'b', 'c']				)

												# Out features should match out indices
												with self.assertRaises(__snake_case				):
																			verify_out_features_out_indices(['a', 'b']      ,(0, 2)      ,['a', 'b', 'c']				)

												# Out features and out indices should be in order
												with self.assertRaises(__snake_case				):
																			verify_out_features_out_indices(['b', 'a']      ,(0, 1)      ,['a', 'b']				)

												# Check passes with valid inputs
												verify_out_features_out_indices(['a', 'b', 'd']      ,(0, 1, -1)      ,['a', 'b', 'c', 'd']				)



					def 			lowerCamelCase__(				self       :Dict				) ->   Tuple:
												a__					=					BackboneMixin()

												a__					=					['a', 'b', 'c']
												a__					=					['a', 'c']
												a__					=					[0, 2]

												# Check that the output features and indices are set correctly
												self.assertEqual(backbone.out_features      ,['a', 'c']				)
												self.assertEqual(backbone.out_indices      ,[0, 2]				)

												# Check out features and indices are updated correctly
												a__					=					['a', 'b']
												self.assertEqual(backbone.out_features      ,['a', 'b']				)
												self.assertEqual(backbone.out_indices      ,[0, 1]				)

												a__					=					[-3, -1]
												self.assertEqual(backbone.out_features      ,['a', 'c']				)
												self.assertEqual(backbone.out_indices      ,[-3, -1]				)








from __future__ import annotations






def 							__lowercase       (			__lowerCAmelCase							:    float ,   __lowerCAmelCase							:    float ,   __lowerCAmelCase							:    float       ):
							if (voltage, current, resistance).count(0       ) != 1:
														raise ValueError('One and only one argument must be 0'       )
							if resistance < 0:
														raise ValueError('Resistance cannot be negative'       )
							if voltage == 0:
														return {"voltage": float(current * resistance       )}
							elif current == 0:
														return {"current": voltage / resistance}
							elif resistance == 0:
														return {"resistance": voltage / current}
							else:
														raise ValueError('Exactly one argument must be 0'       )


if __name__ == "__main__":
						import doctest

						doctest.testmod()




