Python list generator?

Question

Python

Hai! There is a list generator:
i = [x for x in range(1, 1000)]
I can't figure out why x is in front of for?

Answer 1

The expression specifies for the generator. Here it is the simplest and looks like a tautology, but not always the same:
[x**2 for x in range(1, 1000)]

Answer 2

the same thing without a generator, you can somehow write like this.

i = []
for x in range(1,1000):
    i.append(x)

Answer 3

Before for, what is added to the list is not necessarily even a temporary variable from the loop, it can be anything, even though the constant number 1 and after each iteration the number 1 will be added to the list.
And after you have entered what will be added to the list, you enter the cycle itself.