what does the zip command in py code example

Example 1: zip python

>>> x = [1, 2, 3]
>>> y = [4, 5, 6]
>>> zipped = zip(x, y)
>>> list(zipped)
[(1, 4), (2, 5), (3, 6)]
>>> x2, y2 = zip(*zip(x, y))
>>> x == list(x2) and y == list(y2)
True

Example 2: zip python

>>> x = [1, 2, 3]
>>> y = [4, 5, 6]
>>> for t in zip(x, y):
...   print(t)
...
(1, 4)
(2, 5)
(3, 6)