is and not is in python code example

Example 1: python if not

# Using "if not" is practically saying that, 'if this condition is false......'
a = False
if not a:
  print("a is False")
  
# IS SAME AS:

if a == False:
  print("a is False")

Example 2: is not in python

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

Example 3: not in python

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

Example 4: not in python

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

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