[split] The Collatz Sequence

[valencia]

thank you kindly for the explanation.
it's clear now.

But the FOR function is not very clear. The suggested code using FOR do not return the result of the original code (using WHILE).
when i type 3, it only return 10 (instead of returning a sequence of number).
Does it mean it is not possible using FOR?

def collatz_sequence(number):
    if number == 1:
        return
    elif number %2==0:
        number = (number//2)    
    else:
        number = (3*number+1)         
    yield number
 
number=input('enter a number ')
number = int(number)
for number in collatz_sequence(number):
    print(number)