Two confusions in this: a,b,*c = [x for x in range(1,5)]

Question

a,b,*c = [x for x in range(1,5)]

1. What does that mean *c? I don't think it is a valid variable.
2. I know for x in range(5) But what does that mean x for x in range(5)？why they put a x in front of this loop.

Answer 1

1. Tuple Unpacking
https://www.sololearn.com/learn/JUMP_LINK__&&__Python__&&__JUMP_LINK/2485/?ref=app

*c means taking the rest of variables

In your example, range(1,5) is 1,2,3,4
a = 1
b = 2
*c = the rest
so
c = [3, 4]

2. List comprehension
Just like writing a for loop but in one line
https://www.sololearn.com/learn/Python/2454/

range() returns a generator, so you cannot use list unpacking directly, so use a for loop to take the values out.