question about list comprehension

[Exsul]

I understand most of this:

>>> [(x, y) for x in [1,2,3] for y in [3,1,4] if x != y]

Output:
[(1, 3), (1, 4), (2, 3), (2, 1), (2, 4), (3, 1), (3, 4)]

Equivalent to:

>>>

>>> combs = []
>>> for x in [1,2,3]:
...     for y in [3,1,4]:
...         if x != y:
...             combs.append((x, y))
...
>>> combs

Output:
[(1, 3), (1, 4), (2, 3), (2, 1), (2, 4), (3, 1), (3, 4)]

What I don't understand is how, in the list comprehension, Python knows to make (x, y) into a list of tuples.

Please use small words. I'm a beginner!

---

Wait, I think I figured it out. It's already a tuple, and it's in a list. So a new tuple is made every time the conditions of the loops are met?