"""simple docstring"""
from typing import Any





def 				lowerCAmelCase__      (     _UpperCamelCase    :			list	,     _UpperCamelCase    :			list	,     _UpperCamelCase    :			dict	,     _UpperCamelCase    :			dict	,     _UpperCamelCase    :			dict	,     )   ->			list:





						"""simple docstring"""






						_validation(
						    __lowerCAmelCase	,     __lowerCAmelCase	,     __lowerCAmelCase	,     __lowerCAmelCase	,     __lowerCAmelCase	,     )
						# Creates data structures and fill initial step
						snake_case        =     {}
						snake_case        =     {}
						for state in states_space:
												snake_case        =     observations_space[0]
												snake_case        =     (
												    initial_probabilities[state] * emission_probabilities[state][observation]
												)
												snake_case        =     None

						# Fills the data structure with the probabilities of
						# different transitions and pointers to previous states
						for o in range(1	,     len(__lowerCAmelCase   )   ):
												snake_case        =     observations_space[o]
												snake_case        =     observations_space[o - 1]
												for state in states_space:
																		# Calculates the argmax for probability function
																		snake_case        =     ''
																		snake_case        =     -1
																		for k_state in states_space:
																								snake_case        =     (
																								    probabilities[(k_state, prior_observation)]
																								    * transition_probabilities[k_state][state]
																								    * emission_probabilities[state][observation]
																								)
																								if probability > max_probability:
																														snake_case        =     probability
																														snake_case        =     k_state

																								# Update probabilities and pointers dicts
																		snake_case        =     (
																		    probabilities[(arg_max, prior_observation)]
																		    * transition_probabilities[arg_max][state]
																		    * emission_probabilities[state][observation]
																		)

																		snake_case        =     arg_max

    # The final observation
						snake_case        =     observations_space[len(__lowerCAmelCase   ) - 1]

						# argmax for given final observation
						snake_case        =     ''
						snake_case        =     -1
						for k_state in states_space:
												snake_case        =     probabilities[(k_state, final_observation)]
												if probability > max_probability:
																		snake_case        =     probability
																		snake_case        =     k_state
						snake_case        =     arg_max

						# Process pointers backwards
						snake_case        =     last_state
						snake_case        =     []
						for o in range(len(__lowerCAmelCase   ) - 1	,     -1	,     -1   ):
												result.append(__lowerCAmelCase   )
												snake_case        =     pointers[previous, observations_space[o]]
						result.reverse()

						return result





def 				lowerCAmelCase__      (     _UpperCamelCase    :			Any	,     _UpperCamelCase    :			Any	,     _UpperCamelCase    :			Any	,     _UpperCamelCase    :			Any	,     _UpperCamelCase    :			Any	,     )   ->			None:





						"""simple docstring"""






						_validate_not_empty(
						    __lowerCAmelCase	,     __lowerCAmelCase	,     __lowerCAmelCase	,     __lowerCAmelCase	,     __lowerCAmelCase	,     )
						_validate_lists(__lowerCAmelCase	,     __lowerCAmelCase   )
						_validate_dicts(
						    __lowerCAmelCase	,     __lowerCAmelCase	,     __lowerCAmelCase   )





def 				lowerCAmelCase__      (     _UpperCamelCase    :			Any	,     _UpperCamelCase    :			Any	,     _UpperCamelCase    :			Any	,     _UpperCamelCase    :			Any	,     _UpperCamelCase    :			Any	,     )   ->			None:





						"""simple docstring"""






						if not all(
						    [
						        observations_space,
						        states_space,
						        initial_probabilities,
						        transition_probabilities,
						        emission_probabilities,
						    ]   ):
												raise ValueError('There\'s an empty parameter'   )





def 				lowerCAmelCase__      (     _UpperCamelCase    :			Any	,     _UpperCamelCase    :			Any   )   ->			None:





						"""simple docstring"""






						_validate_list(__lowerCAmelCase	,     'observations_space'   )
						_validate_list(__lowerCAmelCase	,     'states_space'   )





def 				lowerCAmelCase__      (     _UpperCamelCase    :			Any	,     _UpperCamelCase    :			str   )   ->			None:





						"""simple docstring"""






						if not isinstance(_object	,     __lowerCAmelCase   ):
												snake_case        =     f"""{var_name} must be a list"""
												raise ValueError(__lowerCAmelCase   )
						else:
												for x in _object:
																		if not isinstance(__lowerCAmelCase	,     __lowerCAmelCase   ):
																								snake_case        =     f"""{var_name} must be a list of strings"""
																								raise ValueError(__lowerCAmelCase   )





def 				lowerCAmelCase__      (     _UpperCamelCase    :			Any	,     _UpperCamelCase    :			Any	,     _UpperCamelCase    :			Any	,     )   ->			None:





						"""simple docstring"""






						_validate_dict(__lowerCAmelCase	,     'initial_probabilities'	,     __lowerCAmelCase   )
						_validate_nested_dict(__lowerCAmelCase	,     'transition_probabilities'   )
						_validate_nested_dict(__lowerCAmelCase	,     'emission_probabilities'   )





def 				lowerCAmelCase__      (     _UpperCamelCase    :			Any	,     _UpperCamelCase    :			str   )   ->			None:





						"""simple docstring"""






						_validate_dict(_object	,     __lowerCAmelCase	,     __lowerCAmelCase   )
						for x in _object.values():
												_validate_dict(__lowerCAmelCase	,     __lowerCAmelCase	,     __lowerCAmelCase	,     __lowerCAmelCase   )





def 				lowerCAmelCase__      (     _UpperCamelCase    :			Any	,     _UpperCamelCase    :			str	,     _UpperCamelCase    :			type	,     _UpperCamelCase    :			bool = False   )   ->			None:





						"""simple docstring"""






						if not isinstance(_object	,     __lowerCAmelCase   ):
												snake_case        =     f"""{var_name} must be a dict"""
												raise ValueError(__lowerCAmelCase   )
						if not all(isinstance(__lowerCAmelCase	,     __lowerCAmelCase   ) for x in _object   ):
												snake_case        =     f"""{var_name} all keys must be strings"""
												raise ValueError(__lowerCAmelCase   )
						if not all(isinstance(__lowerCAmelCase	,     __lowerCAmelCase   ) for x in _object.values()   ):
												snake_case        =     'nested dictionary ' if nested else ''
												snake_case        =     f"""{var_name} {nested_text}all values must be {value_type.__name__}"""
												raise ValueError(__lowerCAmelCase   )


if __name__ == "__main__":
					from doctest import testmod

					testmod()



"""simple docstring"""
import json
import os
import tempfile
import unittest
import unittest.mock as mock
from pathlib import Path

from requests.exceptions import HTTPError

from transformers.utils import (
    CONFIG_NAME,
    FLAX_WEIGHTS_NAME,
    TF2_WEIGHTS_NAME,
    TRANSFORMERS_CACHE,
    WEIGHTS_NAME,
    cached_file,
    get_file_from_repo,
    has_file,
)


SCREAMING_SNAKE_CASE__   =					"hf-internal-testing/tiny-random-bert"
SCREAMING_SNAKE_CASE__   =					os.path.join(TRANSFORMERS_CACHE, "models--hf-internal-testing--tiny-random-bert")
SCREAMING_SNAKE_CASE__   =					"9b8c223d42b2188cb49d29af482996f9d0f3e5a6"



class 					lowerCAmelCase_      (     unittest.TestCase   ):



				"""simple docstring"""

				def 						snake_case	(			self      ):






										"""simple docstring"""

										snake_case        =     cached_file(lowerCAmelCase						,      lowerCAmelCase      )
										# Should have downloaded the file in here
										self.assertTrue(os.path.isdir(lowerCAmelCase      )      )
										# Cache should contain at least those three subfolders:
										for subfolder in ["blobs", "refs", "snapshots"]:
																self.assertTrue(os.path.isdir(os.path.join(lowerCAmelCase						,      lowerCAmelCase      )      )      )
										with open(os.path.join(lowerCAmelCase						,      'refs'						,      'main'      )      ) as f:
																snake_case        =     f.read()
										self.assertEqual(lowerCAmelCase						,      os.path.join(lowerCAmelCase						,      'snapshots'						,      lowerCAmelCase						,      lowerCAmelCase      )      )
										self.assertTrue(os.path.isfile(lowerCAmelCase      )      )

										# File is cached at the same place the second time.
										snake_case        =     cached_file(lowerCAmelCase						,      lowerCAmelCase      )
										self.assertEqual(lowerCAmelCase						,      lowerCAmelCase      )

										# Using a specific revision to test the full commit hash.
										snake_case        =     cached_file(lowerCAmelCase						,      lowerCAmelCase						,      revision='9b8c223'      )
										self.assertEqual(lowerCAmelCase						,      os.path.join(lowerCAmelCase						,      'snapshots'						,      lowerCAmelCase						,      lowerCAmelCase      )      )

				def 						snake_case	(			self      ):






										"""simple docstring"""

										with self.assertRaisesRegex(lowerCAmelCase						,      'is not a valid model identifier'      ):
																snake_case        =     cached_file('tiny-random-bert'						,      lowerCAmelCase      )

										with self.assertRaisesRegex(lowerCAmelCase						,      'is not a valid git identifier'      ):
																snake_case        =     cached_file(lowerCAmelCase						,      lowerCAmelCase						,      revision='aaaa'      )

										with self.assertRaisesRegex(lowerCAmelCase						,      'does not appear to have a file named'      ):
																snake_case        =     cached_file(lowerCAmelCase						,      'conf'      )

				def 						snake_case	(			self      ):






										"""simple docstring"""

										with self.assertRaisesRegex(lowerCAmelCase						,      'does not appear to have a file named'      ):
																snake_case        =     cached_file(lowerCAmelCase						,      'conf'      )

										with open(os.path.join(lowerCAmelCase						,      'refs'						,      'main'      )      ) as f:
																snake_case        =     f.read()
										self.assertTrue(os.path.isfile(os.path.join(lowerCAmelCase						,      '.no_exist'						,      lowerCAmelCase						,      'conf'      )      )      )

										snake_case        =     cached_file(lowerCAmelCase						,      'conf'						,      _raise_exceptions_for_missing_entries=lowerCAmelCase      )
										self.assertIsNone(lowerCAmelCase      )

										snake_case        =     cached_file(lowerCAmelCase						,      'conf'						,      local_files_only=lowerCAmelCase						,      _raise_exceptions_for_missing_entries=lowerCAmelCase      )
										self.assertIsNone(lowerCAmelCase      )

										snake_case        =     mock.Mock()
										snake_case        =     5_00
										snake_case        =     {}
										snake_case        =     HTTPError
										snake_case        =     {}

										# Under the mock environment we get a 500 error when trying to reach the tokenizer.
										with mock.patch('requests.Session.request'						,      return_value=lowerCAmelCase      ) as mock_head:
																snake_case        =     cached_file(lowerCAmelCase						,      'conf'						,      _raise_exceptions_for_connection_errors=lowerCAmelCase      )
																self.assertIsNone(lowerCAmelCase      )
																# This check we did call the fake head request
																mock_head.assert_called()

				def 						snake_case	(			self      ):






										"""simple docstring"""

										self.assertTrue(has_file('hf-internal-testing/tiny-bert-pt-only'						,      lowerCAmelCase      )      )
										self.assertFalse(has_file('hf-internal-testing/tiny-bert-pt-only'						,      lowerCAmelCase      )      )
										self.assertFalse(has_file('hf-internal-testing/tiny-bert-pt-only'						,      lowerCAmelCase      )      )

				def 						snake_case	(			self      ):






										"""simple docstring"""

										self.assertIsNone(get_file_from_repo('bert-base-cased'						,      'ahah.txt'      )      )

										# The function raises if the repository does not exist.
										with self.assertRaisesRegex(lowerCAmelCase						,      'is not a valid model identifier'      ):
																get_file_from_repo('bert-base-case'						,      lowerCAmelCase      )

										# The function raises if the revision does not exist.
										with self.assertRaisesRegex(lowerCAmelCase						,      'is not a valid git identifier'      ):
																get_file_from_repo('bert-base-cased'						,      lowerCAmelCase						,      revision='ahaha'      )

										snake_case        =     get_file_from_repo('bert-base-cased'						,      lowerCAmelCase      )
										# The name is the cached name which is not very easy to test, so instead we load the content.
										snake_case        =     json.loads(open(lowerCAmelCase						,      'r'      ).read()      )
										self.assertEqual(config['hidden_size']						,      7_68      )

				def 						snake_case	(			self      ):






										"""simple docstring"""

										with tempfile.TemporaryDirectory() as tmp_dir:
																snake_case        =     Path(lowerCAmelCase      ) / 'a.txt'
																filename.touch()
																self.assertEqual(get_file_from_repo(lowerCAmelCase						,      'a.txt'      )						,      str(lowerCAmelCase      )      )

																self.assertIsNone(get_file_from_repo(lowerCAmelCase						,      'b.txt'      )      )


