true false in python code example

Example 1: python if not true

a = False
if not a:
  #Does this

a = True
if not a:
  #Doesn't do this

Example 2: false python

>>> print(not False)
True
>>> print(not [])
True
>>> print(not None)
True
>>> print(not "")
True
>>> print(not '')
True
>>> print(not 0)
True