code: 
  
  
  
  """simple docstring"""
  import math
  import os
  
  import cva
  import numpy as np
  
  _lowerCAmelCase					:List[str]  =      255.0
  
  
  
  
  
  def 				lowerCamelCase_		(UpperCamelCase__	:	Dict  , UpperCamelCase__	:	Any							):
      _UpperCAmelCase							:						str       							=					np.mean((original - contrast) ** 2							)
      if mse == 0:
          return 100
  
      return 20 * math.logaa(PIXEL_MAX / math.sqrt(__a							)							)
  
  
  
  
  
  def 				lowerCamelCase_		():
      _UpperCAmelCase							:						str       							=					os.path.dirname(os.path.realpath(__a							)							)
      # Loading images (original image and compressed image)
      _UpperCAmelCase							:						Union[str, Any]       							=					cva.imread(os.path.join(__a  , '''image_data/original_image.png'''							)							)
      _UpperCAmelCase							:						Optional[Any]       							=					cva.imread(os.path.join(__a  , '''image_data/compressed_image.png'''							)  , 1							)
  
      _UpperCAmelCase							:						str       							=					cva.imread(os.path.join(__a  , '''image_data/PSNR-example-base.png'''							)							)
      _UpperCAmelCase							:						Optional[int]       							=					cva.imread(
          os.path.join(__a  , '''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(__a  , __a							)} dB'							)
  
      # # Value expected: 31.53dB (Wikipedia Example)
      print('''\n-- Second Test --'''							)
      print(F'PSNR value is {peak_signal_to_noise_ratio(__a  , __a							)} dB'							)
  
  
  if __name__ == "__main__":
        main()
  
  
  
style_context: 
  
  
  
  """simple docstring"""
  import os
  
  from apache_beam.io.filesystems import FileSystems
  from apache_beam.pipeline import Pipeline
  
  from .logging import get_logger
  
  
  _lowerCAmelCase					:Optional[int]  =      2 << 20  # 2mb
  _lowerCAmelCase					:Union[str, Any]  =      get_logger(__name__)
  class 							_UpperCAmelCase							(				a   ):
  
  
  
  
  
       '''simple docstring'''
  
  
  
       def 				__lowerCAmelCase			(      self	)							->      Any:
           _UpperCAmelCase							:						str       							=					self._options.get_all_options().get('''runner'''	)
           return runner in [None, "DirectRunner", "PortableRunner"]
  
  
  
  
  
  def 				lowerCamelCase_		(UpperCamelCase__	:	List[str]  , UpperCamelCase__	:	str  , UpperCamelCase__	:	Dict=False							):
      _UpperCAmelCase							:						Union[str, Any]       							=					FileSystems
      if fs.exists(UpperCamelCase__							):
          if force_upload:
              logger.info(F'Remote path already exist: {remote_file_path}. Overwriting it as force_upload=True.'							)
          else:
              logger.info(F'Remote path already exist: {remote_file_path}. Skipping it as force_upload=False.'							)
              return
      with fs.create(UpperCamelCase__							) as remote_file:
          with open(UpperCamelCase__  , '''rb'''							) as local_file:
              _UpperCAmelCase							:						Optional[Any]       							=					local_file.read(UpperCamelCase__							)
              while chunk:
                  remote_file.write(UpperCamelCase__							)
                  _UpperCAmelCase							:						List[Any]       							=					local_file.read(UpperCamelCase__							)
  
  
  
  
  
  def 				lowerCamelCase_		(UpperCamelCase__	:	int  , UpperCamelCase__	:	Dict  , UpperCamelCase__	:	str=False							):
      _UpperCAmelCase							:						int       							=					FileSystems
      if os.path.exists(UpperCamelCase__							):
          if force_download:
              logger.info(F'Local path already exist: {remote_file_path}. Overwriting it as force_upload=True.'							)
          else:
              logger.info(F'Local path already exist: {remote_file_path}. Skipping it as force_upload=False.'							)
              return
      with fs.open(UpperCamelCase__							) as remote_file:
          with open(UpperCamelCase__  , '''wb'''							) as local_file:
              _UpperCAmelCase							:						List[str]       							=					remote_file.read(UpperCamelCase__							)
              while chunk:
                  local_file.write(UpperCamelCase__							)
                  _UpperCAmelCase							:						List[Any]       							=					remote_file.read(UpperCamelCase__							)
  
  
  