How to change for-loop iterator variable in the loop in Python?

Question

I want to know if is it possible to change the value of the iterator in its for-loop?

For example I want to write a program to calculate prime factor of a number in the

Answer 1

The standard way of dealing with this is to completely exhaust the divisions by i in the body of the for loop itself:

def primeFactors(number):
    for i in range(2,number+1):
        while number % i == 0:
            print(i, end=',')
            number /= i

It's slightly more efficient to do the division and remainder in one step:

def primeFactors(number):
    for i in range(2, number+1):
        while True:
            q, r = divmod(number, i)
            if r != 0:
                break
            print(i, end=',')
            number = q