human
Sum of alternating sign Squares of first N natural numbers | Function to calculate the alternating sign sum.
Variable to store the absolute sum.
Variable to store the sign.
Variable to store the resultant sum.
Driver code"
How can the above be solved in Python?
 Write me a code to sum of alternating sign Squares of first N natural numbers and the other steps required?
assistant
#Here is code to sum of alternating sign Squares of first N natural numbers and the other steps required.
 def summation ( n ) :
	abs_sum = n * ( n + 1 ) // 2 ;
	sign = 1 if ( ( n + 1 ) % 2 == 0 ) else - 1 ;
	result_sum = sign * abs_sum ;
	return result_sum ;
if __name__ == " _ _ main _ _ " :
	N = 2 ;
	print ( summation ( N ) ) ;