
'''simple docstring'''

def      A   (					UpperCamelCase_    :   int					)    ->				int:







			'''simple docstring'''



			if not isinstance(UpperCamelCase_  ,		UpperCamelCase_					):
						raise ValueError("double_factorial() only accepts integral values"					)
			if num < 0:
						raise ValueError("double_factorial() not defined for negative values"					)
			lowerCAmelCase__									=							1
			for i in range(UpperCamelCase_  ,		0  ,		-2					):
						value *= i
			return value


if __name__ == "__main__":
		import doctest

		doctest.testmod()












"""simple docstring"""


def SCREAMING_SNAKE_CASE_   (       snake_case   :					str		)->		list:
       _lowerCamelCase    	=					[]
       _lowerCamelCase    	=					1

       for i in range(len(snake_case		)		):
              if i + 1 < len(snake_case		) and text[i] == text[i + 1]:
                     count += 1
              else:
                     encoded.append((text[i], count)		)
                     _lowerCamelCase    	=					1

       return encoded





def SCREAMING_SNAKE_CASE_   (       snake_case   :					list		)->		str:
       return "".join(char * length for char, length in encoded		)


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

      testmod(name="""run_length_encode""", verbose=True)
      testmod(name="""run_length_decode""", verbose=True)






