pi python
# Approximation of the number PI through the Nilakantha's series from decimal import * getcontext().prec = 100 s = Decimal(1); #Signal for the next operation pi = Decimal(3); n = input("Enter the number of iterations: ") for i in range (2, n * 2, 2): pi += (s*(Decimal(4)/(Decimal(i)*(Decimal(i)+Decimal(1))*(Decimal(i)+Decimal(2))))) s *= -1 print ("Aproximated value of PI :") print (pi)