How to turn the numbers in the sequence generated by the collatz function into a string by using concatenation

Question

The numbers in the sequence generated by the Collatz function will be put in a string. Building this string is likely the hardest part of this. Get the computation working without worrying about creating the string. Now, I'm sure I'm getting logically correct output, I need the help to create the string containing all the numbers, separated by a comma and space characters.

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Answer 1

result is not concatenated.

def Collatz(number):
    result = ''
    while number != 1:
        ...
        ...
        print(number)
        if result:
            result = str(number)
        else:
            result += ', ' + str(number)
    return result

    n = get_input()
    result = Collatz(n)
    print(result)