






def    lowerCAmelCase__		(			_a				:	str			):
		return "".join(chr(ord(_a			) + 32			) if "A" <= char <= "Z" else char for char in word			)


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

							testmod()








def    lowerCAmelCase__		(			_a				:	int			):
		if not isinstance(_a     ,					_a			):
				snake_case_ :							Optional[int]         =				F'''Input value of [number={number}] must be an integer'''
				raise TypeError(_a			)
		if number < 1:
				raise ValueError("Input must be a positive integer"			)
		return number * (2 * number - 1)


if __name__ == "__main__":
							import doctest

							doctest.testmod()
