code: 
  
  
  from __future__ import annotations
  
  
  
  
  
  
  
  def  _lowerCamelCase(			lowercase__			)		->			bool:
  
  		'''simple docstring'''
  
  
  
  
  
  
  
  		__lowercase=    42
  		__lowercase=    list(lowercase__			)
  		__lowercase,							__lowercase=    _vector[:-1], int(_vector[-1]			)
  		__lowercase=    [int(lowercase__			) for digit in __vector]
  
  		vector.reverse()
  		for i, digit in enumerate(lowercase__			):
  				if i & 1 == 0:
  						__lowercase=    digit * 2
  						if doubled > 9:
  								doubled -= 9
  						check_digit += doubled
  				else:
  						check_digit += digit
  
  		return check_digit % 1_0 == 0
  
  
  if __name__ == "__main__":
  	import doctest
  
  	doctest.testmod()
  	assert is_luhn('''79927398713''')
  	assert not is_luhn('''79927398714''')
  
  
  
  
  
  
  
style_context: 
  
  
  from __future__ import annotations
  
  from enum import Enum
  
  
  
  
  
  class    A					(     A_				):
  							UpperCamelCase_     :							List[Any] =24
  							UpperCamelCase_     :							List[Any] =21
  							UpperCamelCase_     :							int =18
  							UpperCamelCase_     :							Optional[int] =15
  							UpperCamelCase_     :							Tuple =12
  							UpperCamelCase_     :							List[str] =9
  							UpperCamelCase_     :							Any =6
  							UpperCamelCase_     :							List[str] =3
  							UpperCamelCase_     :							str =2
  							UpperCamelCase_     :							str =1
  							UpperCamelCase_     :							Optional[int] =-1
  							UpperCamelCase_     :							List[Any] =-2
  							UpperCamelCase_     :							str =-3
  							UpperCamelCase_     :							Tuple =-6
  							UpperCamelCase_     :							Tuple =-9
  							UpperCamelCase_     :							Optional[int] =-12
  							UpperCamelCase_     :							str =-15
  							UpperCamelCase_     :							Optional[Any] =-18
  							UpperCamelCase_     :							Any =-21
  							UpperCamelCase_     :							List[str] =-24
  
  
  
  
  
  class    A					(     A_				):
  							UpperCamelCase_     :							str =8
  							UpperCamelCase_     :							Optional[Any] =7
  							UpperCamelCase_     :							Tuple =6
  							UpperCamelCase_     :							List[Any] =5
  							UpperCamelCase_     :							Optional[Any] =4
  							UpperCamelCase_     :							Union[str, Any] =3
  							UpperCamelCase_     :							Union[str, Any] =2
  							UpperCamelCase_     :							int =1
  
  
  
  
  
  
  
  def  _lowerCamelCase(			lowercase__     ,				lowercase__     ,				lowercase__     ,				)		->			float:
  
  		'''simple docstring'''
  
  
  
  
  
  
  
  		if isinstance(lowercase__     ,				lowercase__			):
  				__lowercase=    SIUnit[known_prefix.lower()]
  		if isinstance(lowercase__     ,				lowercase__			):
  				__lowercase=    SIUnit[unknown_prefix.lower()]
  		__lowercase=    known_amount * (
  		    1_0 ** (known_prefix.value - unknown_prefix.value)
  		)
  		return unknown_amount
  
  
  
  
  
  
  
  def  _lowerCamelCase(			lowercase__     ,				lowercase__     ,				lowercase__     ,				)		->			float:
  
  		'''simple docstring'''
  
  
  
  
  
  
  
  		if isinstance(lowercase__     ,				lowercase__			):
  				__lowercase=    BinaryUnit[known_prefix.lower()]
  		if isinstance(lowercase__     ,				lowercase__			):
  				__lowercase=    BinaryUnit[unknown_prefix.lower()]
  		__lowercase=    known_amount * (
  		    2 ** ((known_prefix.value - unknown_prefix.value) * 1_0)
  		)
  		return unknown_amount
  
  
  if __name__ == "__main__":
  	import doctest
  
  	doctest.testmod()
  
  
  
  
  
  
  