why is {if not false } condition not executing?

Question

if not 1 + 1 == y or x == 4 and 7 == 8
if not (true or true) and false
if not (true and false)
if not false

Answer 1

put 1 + 1 inside parenthesis?

Answer 2

Yes, Capitalize Booleans...

Answer 3

you should code "if not False"
unless you have already defined "false"

Answer 4

if you do so,the answer is the same,but it can help you to check the code more conveniently