Python help

I'm taking a basic Python class and occasionally have one-off questions. Google/Stackoverflow searches usually help but not always. There's also an online tutoring service but they sometimes tell me they can't figure out the issue.

I'm sure there are at least a few people here who know python.

Here's where I'm stuck. This is just a snippet of the program, partially edited. All I want here is to print the Cartesian product of the two lists in this format:

(A, 1) (A, 2) (A, 3)
(B, 1) (B, 2) (B, 3)
(C, 1) (C, 2) (C, 3)

Spoiler

Code:

import itertools

predef_listA = [A,B,C]
predef_listB = [1,2,3]

welcome = str(input('Type Yes'))
if welcome == 'Yes':
    print('Here is the first list: ', predef_listA)
    print('Here is the second list: ', predef_listB)
    input('Press Enter.')
    from itertools import product
    for list1, list2 in product(predef_listA,predef_listB):
        print(list1, list2)

Right now it's printing out like this:
A 1
A 2
A 3
B 1
B 2
etc...

(For my purposes I don't care if it prints out with parentheses, brackets, or neither.)

I'm wondering if I should abandon itertools and do a for loop?