python is not none code example

Example 1: is not none python

# To check if a variable is not None:
if x is not None:
  # Do something

Example 2: 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 3: is not none in python

>>> x = None 
... if x: 
...     print 'if x' 
... if x is not None: 
...     print 'if x is not None'