






'''simple docstring'''

import json
import os
import pickle
import subprocess
from hashlib import mda
from pathlib import Path
from tempfile import gettempdir
from textwrap import dedent
from types import CodeType, FunctionType
from unittest import TestCase
from unittest.mock import patch

import pytest
from multiprocess import Pool
from packaging import version

import datasets
from datasets.fingerprint import Hasher, fingerprint_transform
from datasets.table import InMemoryTable

from .utils import (
    require_regex,
    require_spacy,
    require_spacy_model,
    require_tiktoken,
    require_torch,
    require_transformers,
)






class 				__magic_name__  :







	"""simple docstring"""



	def __init__(				self	,   _lowercase							)    ->	Optional[Any]:
							lowercase_   : List[str]   	=      foo







	def __call__(				self							)    ->	List[str]:
							return self.foo






class 				__magic_name__  (						datasets.Dataset					):







	"""simple docstring"""



	@fingerprint_transform(inplace=_lowerCAmelCase							)
	def 							lowerCamelCase__		(				self	,   _lowercase	,   *_lowercase	,   **_lowercase							)    ->	Any:
							return DatasetChild(self.data	,   fingerprint=_lowerCAmelCase							)







	@fingerprint_transform(inplace=_lowerCAmelCase							)
	def 							lowerCamelCase__		(				self	,   _lowercase	,   *_lowercase	,   **_lowercase							)    ->	Dict:
							return DatasetChild(self.data	,   fingerprint=_lowerCAmelCase							)






class 				__magic_name__  :







	"""simple docstring"""



	def __init__(				self	,   _lowercase							)    ->	Union[str, Any]:
							lowercase_   : Tuple   	=      callable
	def __call__(				self	,   *_lowercase	,   **_lowercase							)    ->	Dict:
							if self.callable is not None:
													return self.callable(*_lowerCAmelCase	,   **_lowerCAmelCase							)







	def __getstate__(				self							)    ->	List[Any]:
							raise pickle.PicklingError()






class 				__magic_name__  (						UpperCAmelCase__					):







	"""simple docstring"""



	@require_transformers
	@pytest.mark.integration
	def 							lowerCamelCase__		(				self							)    ->	Union[str, Any]:
							from transformers import AutoTokenizer

							def encode(_lowercase							):
													return tokenizer(_lowerCAmelCase							)

							# TODO: add hash consistency tests across sessions
							lowercase_   : Tuple   	=      AutoTokenizer.from_pretrained('bert-base-uncased'							)
							lowercase_   : Optional[Any]   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							lowercase_   : Any   	=      mda(datasets.utils.py_utils.dumps(lambda _lowercase							: tokenizer(_lowerCAmelCase							)							)							).hexdigest()
							lowercase_   : Dict   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							lowercase_   : Union[str, Any]   	=      AutoTokenizer.from_pretrained('bert-base-cased'							)
							lowercase_   : Optional[Any]   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							lowercase_   : Optional[Any]   	=      mda(datasets.utils.py_utils.dumps(lambda _lowercase							: tokenizer(_lowerCAmelCase							)							)							).hexdigest()
							lowercase_   : Tuple   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							lowercase_   : str   	=      AutoTokenizer.from_pretrained('bert-base-uncased'							)
							lowercase_   : List[Any]   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							lowercase_   : List[str]   	=      mda(datasets.utils.py_utils.dumps(lambda _lowercase							: tokenizer(_lowerCAmelCase							)							)							).hexdigest()
							lowercase_   : Any   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertNotEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertNotEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertNotEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
	@require_transformers
	@pytest.mark.integration
	def 							lowerCamelCase__		(				self							)    ->	int:
							from transformers import AutoTokenizer

							lowercase_   : Optional[Any]   	=      AutoTokenizer.from_pretrained('gpt2'							)
							lowercase_   : Optional[Any]   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							tokenizer('Hello world !'							)  # call once to change the tokenizer's cache
							lowercase_   : Optional[Any]   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)







	@require_regex
	def 							lowerCamelCase__		(				self							)    ->	Optional[int]:
							import regex

							lowercase_   : int   	=      regex.Regex('foo'							)
							lowercase_   : List[Any]   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							lowercase_   : int   	=      regex.Regex('bar'							)
							lowercase_   : List[Any]   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							lowercase_   : Optional[int]   	=      regex.Regex('foo'							)
							lowercase_   : Dict   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertNotEqual(_lowerCAmelCase	,   _lowerCAmelCase							)






class 				__magic_name__  (						UpperCAmelCase__					):







	"""simple docstring"""



	def 							lowerCamelCase__		(				self							)    ->	Dict:
							def func():
													return foo

							lowercase_   : Optional[Any]   	=      [0]
							lowercase_   : Tuple   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							lowercase_   : List[str]   	=      [1]
							lowercase_   : List[Any]   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							lowercase_   : Any   	=      [0]
							lowercase_   : str   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertNotEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
	def 							lowerCamelCase__		(				self							)    ->	Any:
							def func():
													pass

							lowercase_   : Union[str, Any]   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()

							def func():
													pass

							lowercase_   : Tuple   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
	def 							lowerCamelCase__		(				self							)    ->	str:
							lowercase_   : Dict   	=      mda(datasets.utils.py_utils.dumps(Foo([0]							)							)							).hexdigest()
							lowercase_   : str   	=      mda(datasets.utils.py_utils.dumps(Foo([1]							)							)							).hexdigest()
							lowercase_   : Optional[Any]   	=      mda(datasets.utils.py_utils.dumps(Foo([0]							)							)							).hexdigest()
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertNotEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
	def 							lowerCamelCase__		(				self							)    ->	Union[str, Any]:
							lowercase_   : str   	=      mda(datasets.utils.py_utils.dumps(Foo([0]							).__call__							)							).hexdigest()
							lowercase_   : Tuple   	=      mda(datasets.utils.py_utils.dumps(Foo([1]							).__call__							)							).hexdigest()
							lowercase_   : Dict   	=      mda(datasets.utils.py_utils.dumps(Foo([0]							).__call__							)							).hexdigest()
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertNotEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
	def 							lowerCamelCase__		(				self							)    ->	Dict:
							lowercase_   : str   	=      (
							    'co_argcount',
							    'co_kwonlyargcount',
							    'co_nlocals',
							    'co_stacksize',
							    'co_flags',
							    'co_code',
							    'co_consts',
							    'co_names',
							    'co_varnames',
							    'co_filename',
							    'co_name',
							    'co_firstlineno',
							    'co_lnotab',
							    'co_freevars',
							    'co_cellvars',
							)

							def _create_code_pyaa(*_lowercase							):
													if hasattr(args[-3]	,   'encode'							):
																			lowercase_   : Tuple   	=      list(_lowerCAmelCase							)
																			lowercase_   : Tuple   	=      args[-3].encode()  # co_lnotab
																			lowercase_   : Union[str, Any]   	=      args[-10].encode()  # co_code
													if hasattr(_lowerCAmelCase	,   'co_posonlyargcount'							):
																			if len(_lowerCAmelCase							) == 16:
																									return CodeType(*_lowerCAmelCase							)
																			elif len(_lowerCAmelCase							) == 15:
																									return CodeType(args[0]	,   0	,   *args[1:]							)
																			return CodeType(args[0]	,   0	,   0	,   *args[1:]							)
													elif hasattr(_lowerCAmelCase	,   'co_kwonlyargcount'							):
																			if len(_lowerCAmelCase							) == 16:
																									return CodeType(args[0]	,   *args[2:]							)
																			elif len(_lowerCAmelCase							) == 15:
																									return CodeType(*_lowerCAmelCase							)
																			return CodeType(args[0]	,   0	,   *args[1:]							)
													if len(_lowerCAmelCase							) == 16:
																			return CodeType(args[0]	,   *args[3:]							)
													elif len(_lowerCAmelCase							) == 15:
																			return CodeType(args[0]	,   *args[2:]							)
													return CodeType(*_lowerCAmelCase							)

							def create_ipython_func(_lowercase	,   _lowercase							):
													def func():
																			return returned_obj

													lowercase_   : List[Any]   	=      func.__code__
													# Use _create_code from dill in order to make it work for different python versions
													if datasets.config.PY_VERSION < version.parse('3.8'							):
																			lowercase_   : Any   	=      _create_code_pyaa(
																			    *[getattr(_lowerCAmelCase	,   _lowerCAmelCase							) if k != 'co_filename' else co_filename for k in code_args_pyaa]							)
													else:
																			lowercase_   : Union[str, Any]   	=      code.replace(co_filename=_lowerCAmelCase							)
													return FunctionType(_lowerCAmelCase	,   func.__globals__	,   func.__name__	,   func.__defaults__	,   func.__closure__							)

							lowercase_	,   lowercase_   : List[Any]   	=      '<ipython-input-2-e0383a102aae>', [0]
							lowercase_   : str   	=      mda(datasets.utils.py_utils.dumps(create_ipython_func(_lowerCAmelCase	,   _lowerCAmelCase							)							)							).hexdigest()
							lowercase_	,   lowercase_   : Optional[Any]   	=      '<ipython-input-2-e0383a102aae>', [1]
							lowercase_   : Tuple   	=      mda(datasets.utils.py_utils.dumps(create_ipython_func(_lowerCAmelCase	,   _lowerCAmelCase							)							)							).hexdigest()
							lowercase_	,   lowercase_   : Tuple   	=      '<ipython-input-5-713f6613acf3>', [0]
							lowercase_   : Tuple   	=      mda(datasets.utils.py_utils.dumps(create_ipython_func(_lowerCAmelCase	,   _lowerCAmelCase							)							)							).hexdigest()
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertNotEqual(_lowerCAmelCase	,   _lowerCAmelCase							)

							lowercase_	,   lowercase_   : str   	=      os.path.join(gettempdir()	,   'ipykernel_12345'	,   '321456789.py'							), [0]
							lowercase_   : Optional[int]   	=      mda(datasets.utils.py_utils.dumps(create_ipython_func(_lowerCAmelCase	,   _lowerCAmelCase							)							)							).hexdigest()
							lowercase_	,   lowercase_   : str   	=      os.path.join(gettempdir()	,   'ipykernel_12345'	,   '321456789.py'							), [1]
							lowercase_   : Tuple   	=      mda(datasets.utils.py_utils.dumps(create_ipython_func(_lowerCAmelCase	,   _lowerCAmelCase							)							)							).hexdigest()
							lowercase_	,   lowercase_   : Optional[int]   	=      os.path.join(gettempdir()	,   'ipykernel_12345'	,   '654123987.py'							), [0]
							lowercase_   : List[str]   	=      mda(datasets.utils.py_utils.dumps(create_ipython_func(_lowerCAmelCase	,   _lowerCAmelCase							)							)							).hexdigest()
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertNotEqual(_lowerCAmelCase	,   _lowerCAmelCase							)







	def 							lowerCamelCase__		(				self							)    ->	List[Any]:
							lowercase_	,   lowercase_   : str   	=      [0], [1]

							def func():
													return foo, bar

							lowercase_   : List[Any]   	=      '__main__'

							def globalvars_mocka_side_effect(_lowercase	,   *_lowercase	,   **_lowercase							):
													return {"foo": foo, "bar": bar}

							def globalvars_mocka_side_effect(_lowercase	,   *_lowercase	,   **_lowercase							):
													return {"bar": bar, "foo": foo}

							with patch('dill.detect.globalvars'	,   side_effect=_lowerCAmelCase							) as globalvars_mocka:
													lowercase_   : List[Any]   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
													self.assertGreater(globalvars_mocka.call_count	,   0							)
							with patch('dill.detect.globalvars'	,   side_effect=_lowerCAmelCase							) as globalvars_mocka:
													lowercase_   : List[str]   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
													self.assertGreater(globalvars_mocka.call_count	,   0							)
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)






class 				__magic_name__  (						UpperCAmelCase__					):







	"""simple docstring"""



	def 							lowerCamelCase__		(				self							)    ->	List[str]:
							lowercase_   : Union[str, Any]   	=      Hasher.hash('hello'							)
							lowercase_   : Union[str, Any]   	=      Hasher.hash('hello'							)
							lowercase_   : str   	=      Hasher.hash('there'							)
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertNotEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
	def 							lowerCamelCase__		(				self							)    ->	Dict:
							lowercase_   : Dict   	=      Hasher.hash(Foo('hello'							)							)
							lowercase_   : Dict   	=      Hasher.hash(Foo('hello'							)							)
							lowercase_   : Optional[int]   	=      Hasher.hash(Foo('there'							)							)
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertNotEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
	def 							lowerCamelCase__		(				self							)    ->	Any:
							lowercase_   : Optional[int]   	=      Hasher()
							for x in ["hello", Foo('hello'							)]:
													hasher.update(_lowerCAmelCase							)
							lowercase_   : List[str]   	=      hasher.hexdigest()
							lowercase_   : List[Any]   	=      Hasher()
							for x in ["hello", Foo('hello'							)]:
													hasher.update(_lowerCAmelCase							)
							lowercase_   : Union[str, Any]   	=      hasher.hexdigest()
							lowercase_   : Any   	=      Hasher()
							for x in ["there", Foo('there'							)]:
													hasher.update(_lowerCAmelCase							)
							lowercase_   : Union[str, Any]   	=      hasher.hexdigest()
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertNotEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
	def 							lowerCamelCase__		(				self							)    ->	int:
							with self.assertRaises(pickle.PicklingError							):
													Hasher.hash(UnpicklableCallable(Foo('hello'							)							)							)
	def 							lowerCamelCase__		(				self							)    ->	Optional[Any]:
							lowercase_   : Optional[Any]   	=      'abc'
							lowercase_   : Union[str, Any]   	=      [string, string]  # two strings have the same ids
							lowercase_   : int   	=      [string, string]
							lowercase_   : int   	=      json.loads(f"[\"{string}\", \"{string}\"]"							)  # two strings have different ids
							self.assertIs(obja[0]	,   _lowerCAmelCase							)
							self.assertIs(obja[0]	,   obja[1]							)
							self.assertIs(obja[0]	,   _lowerCAmelCase							)
							self.assertIs(obja[0]	,   obja[1]							)
							self.assertIsNot(obja[0]	,   _lowerCAmelCase							)
							self.assertIsNot(obja[0]	,   obja[1]							)
							lowercase_   : int   	=      Hasher.hash(_lowerCAmelCase							)
							lowercase_   : int   	=      Hasher.hash(_lowerCAmelCase							)
							lowercase_   : str   	=      Hasher.hash(_lowerCAmelCase							)
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
	@require_tiktoken
	def 							lowerCamelCase__		(				self							)    ->	Any:
							import tiktoken

							lowercase_   : Optional[Any]   	=      tiktoken.get_encoding('gpt2'							)
							lowercase_   : Tuple   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							lowercase_   : Dict   	=      tiktoken.get_encoding('r50k_base'							)
							lowercase_   : List[Any]   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							lowercase_   : Optional[int]   	=      tiktoken.get_encoding('gpt2'							)
							lowercase_   : str   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertNotEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
	@require_torch
	def 							lowerCamelCase__		(				self							)    ->	Union[str, Any]:
							import torch

							lowercase_   : Tuple   	=      torch.tensor([1.0]							)
							lowercase_   : str   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							lowercase_   : int   	=      torch.tensor([2.0]							)
							lowercase_   : Dict   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							lowercase_   : Tuple   	=      torch.tensor([1.0]							)
							lowercase_   : List[Any]   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertNotEqual(_lowerCAmelCase	,   _lowerCAmelCase							)







	@require_spacy
	@require_spacy_model('en_core_web_sm'							)
	@require_spacy_model('fr_core_news_sm'							)
	@pytest.mark.integration
	def 							lowerCamelCase__		(				self							)    ->	str:
							import spacy

							lowercase_   : Dict   	=      spacy.load('en_core_web_sm'							)
							lowercase_   : str   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							lowercase_   : Dict   	=      spacy.load('fr_core_news_sm'							)
							lowercase_   : Optional[Any]   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							lowercase_   : Union[str, Any]   	=      spacy.load('en_core_web_sm'							)
							lowercase_   : Dict   	=      mda(datasets.utils.py_utils.dumps(_lowerCAmelCase							)							).hexdigest()
							self.assertEqual(_lowerCAmelCase	,   _lowerCAmelCase							)
							self.assertNotEqual(_lowerCAmelCase	,   _lowerCAmelCase							)






@pytest.mark.integration
def 						_UpperCAmelCase     (	a		:						Path				)      ->      Optional[int]:





						"""simple docstring"""
						lowercase_   : int   	=      tmp_path / 'dir1'
						lowercase_   : List[Any]   	=      tmp_path / 'dir2'
						dira.mkdir()
						dira.mkdir()
						lowercase_   : int   	=      'script.py'
						lowercase_   : Optional[Any]   	=      dedent(
						    '\n    from datasets.fingerprint import Hasher\n    def foo():\n        pass\n    print(Hasher.hash(foo))\n    '				)
						lowercase_   : Union[str, Any]   	=      dira / script_filename
						lowercase_   : Optional[Any]   	=      dira / script_filename
						with script_patha.open('w'				) as f:
												f.write(UpperCAmelCase_				)
						with script_patha.open('w'				) as f:
												f.write(UpperCAmelCase_				)
						lowercase_   : Union[str, Any]   	=      subprocess.check_output(['python', str(UpperCAmelCase_				)]				)
						lowercase_   : List[str]   	=      subprocess.check_output(['python', str(UpperCAmelCase_				)]				)
						assert fingerprinta == fingerprinta






def 						_UpperCAmelCase     (	)      ->      List[Any]:





						"""simple docstring"""
						lowercase_   : Optional[int]   	=      {'a': [0, 1, 2]}
						lowercase_   : Any   	=      DatasetChild(InMemoryTable.from_pydict(UpperCAmelCase_				)				)
						lowercase_   : List[str]   	=      dataset.funca()._fingerprint
						assert expected_fingerprint == dataset.funca()._fingerprint
						assert expected_fingerprint != dataset.funca()._fingerprint

						with Pool(2				) as p:
												assert expected_fingerprint == p.apply_async(dataset.funca				).get()._fingerprint
												assert expected_fingerprint != p.apply_async(dataset.funca				).get()._fingerprint






def 						_UpperCAmelCase     (	)      ->      str:





						"""simple docstring"""
						lowercase_   : Any   	=      {'a': [0, 1, 2]}






						class 				__magic_name__  (						datasets.Dataset					):







							"""simple docstring"""



							@fingerprint_transform(inplace=_lowerCAmelCase							)
							def 							lowerCamelCase__		(				self	,   _lowercase							)    ->	List[str]:
													return DummyDatasetChild(self.data	,   fingerprint=_lowerCAmelCase							)


						lowercase_   : List[str]   	=      DummyDatasetChild(InMemoryTable.from_pydict(UpperCAmelCase_				)				).func()






						class 				__magic_name__  (						datasets.Dataset					):







							"""simple docstring"""



							@fingerprint_transform(inplace=_lowerCAmelCase	,   version='1.0.0'							)
							def 							lowerCamelCase__		(				self	,   _lowercase							)    ->	Optional[int]:
													return DummyDatasetChild(self.data	,   fingerprint=_lowerCAmelCase							)


						lowercase_   : List[str]   	=      DummyDatasetChild(InMemoryTable.from_pydict(UpperCAmelCase_				)				).func()






						class 				__magic_name__  (						datasets.Dataset					):







							"""simple docstring"""



							@fingerprint_transform(inplace=_lowerCAmelCase	,   version='2.0.0'							)
							def 							lowerCamelCase__		(				self	,   _lowercase							)    ->	Union[str, Any]:
													return DummyDatasetChild(self.data	,   fingerprint=_lowerCAmelCase							)


						lowercase_   : Dict   	=      DummyDatasetChild(InMemoryTable.from_pydict(UpperCAmelCase_				)				).func()

						assert len({fingeprint_no_version, fingeprint_a, fingeprint_a}				) == 3






def 						_UpperCAmelCase     (	)      ->      Optional[Any]:





						"""simple docstring"""
						lowercase_   : Dict   	=      Hasher()
						hasher.update(lambda a				: x				)






import math
import os

import cva
import numpy as np

_lowerCamelCase							=      255.0





def 							lowerCamelCase    (							UpperCAmelCase_	:      float   ,       UpperCAmelCase_	:      float      )->			float:

       """simple docstring"""




       a			   =np.mean((original - contrast) ** 2      )
       if mse == 0:
              return 100

       return 20 * math.logaa(PIXEL_MAX / math.sqrt(UpperCAmelCase_      )      )





def 							lowerCamelCase    (							)->			None:

       """simple docstring"""




       a			   =os.path.dirname(os.path.realpath(UpperCAmelCase_      )      )
       # Loading images (original image and compressed image)
       a			   =cva.imread(os.path.join(UpperCAmelCase_   ,       """image_data/original_image.png"""      )      )
       a			   =cva.imread(os.path.join(UpperCAmelCase_   ,       """image_data/compressed_image.png"""      )   ,       1      )

       a			   =cva.imread(os.path.join(UpperCAmelCase_   ,       """image_data/PSNR-example-base.png"""      )      )
       a			   =cva.imread(
           os.path.join(UpperCAmelCase_   ,       """image_data/PSNR-example-comp-10.jpg"""      )   ,       1      )

       # Value expected: 29.73dB
       print("""-- First Test --"""      )
       print(F'''PSNR value is {peak_signal_to_noise_ratio(UpperCAmelCase_   ,       UpperCAmelCase_      )} dB'''      )

       # # Value expected: 31.53dB (Wikipedia Example)
       print("""\n-- Second Test --"""      )
       print(F'''PSNR value is {peak_signal_to_noise_ratio(UpperCAmelCase_   ,       UpperCAmelCase_      )} dB'''      )


if __name__ == "__main__":
    main()
