how does the range function work in python when counting down code example

Example: how does the range function work in python when counting down

range(4)
#considers numbers 0,1,2,3
range(1, 4)
#considers numbers 1,2,3
range(1, 4, 2)
#considers numbers 1,3
range(4, 1, -1)
#considers numbers 4,3,2