The Collatz Sequence

[mlieqo]

Truman, in your final code, you are now printing the results twice, first in your collatz function and then in your while loop. So now if I input f.e. number 3 output is:

Output:
3
10
10
5
5
16
16
8
8
4
4
2
2
1

You should remove print from your collatz function, and probably add one more condition for printing number 1.

def collatz(number):
    if number % 2 == 0:
        return number//2
    else:    
        result = 3*number + 1
        return result       
try:
    n = int(input("Give me a number: "))
    while n != 1:
        print(n)
        n = collatz(abs(n))
    if n == 1:
        print(n)
except ValueError:
    print('Type a number please!')

Also one more thing to consider -> I dont think user should be able to input negative number, from what I read on wikipedia -

The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined as follows: start with any positive integer n.

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Actually in this case, if statement from my comment above

    if n == 1:

should be replaced with else(same result, but nicer).