python is not

arr = ['a','b','c','d','e','f']

if 'g' not in arr:
    print('g is not in the list')

li = [1,2,'a','b']
if 'hello' not in li:
    print('hello is not in the list')

result is not None

# False
print(not(1 == 1))

# True
print(not(1 == 2))

x = 10
if not x:
    print("True")
else:
    print("False")

if not x