first element of list of lists python

>>> lst = [['a','b','c'], [1,2,3], ['x','y','z']]
>>> lst2 = [item[0] for item in lst]
>>> lst2
['a', 1, 'x']

Here is what the above code is Doing:
1. We have a list of lists, lst.
2. We create a new list, lst2.
3. We iterate through each item in lst.
4. For each item, we take the first element and add it to lst2.
5. We print lst2.