





import numpy as np






def 			_SCREAMING_SNAKE_CASE						(     SCREAMING_SNAKE_CASE						:np.array       )     ->       np.array:
 return (2 / (1 + np.exp(-2 * vector       ))) - 1


if __name__ == "__main__":
      import doctest

      doctest.testmod()




"""simple docstring"""







def       _lowerCamelCase				(							UpperCAmelCase_ :       int     )	-> int:






	"""simple docstring"""





	assert (
	    isinstance(UpperCAmelCase_,	UpperCAmelCase_     ) and number_of_steps > 0
	), F"""number_of_steps needs to be positive integer, your input {number_of_steps}"""
	if number_of_steps == 1:
		return 1
	A__							,							A__											=					1, 1
	for _ in range(number_of_steps - 1     ):
		A__							,							A__											=					current + previous, current
	return current


if __name__ == "__main__":
			import doctest

			doctest.testmod()




