old_contents: #!/usr/bin/env python3
  
  # data types in Python3
  2       # integers and numbers
  "eggs"  # strings
  [1, 2]  # lists
  
  # multiple assignment
  a, b = 0, 1
  
  # reload local or any modules
  # Source: http://stackoverflow.com/a/14390676
  import imp
  imp.reload(module)
  
  # autoconcatenate strings, doesn't work with variables
  'Py' 'thon' # first way
  ('Py'
   'thon') # another way
  
  # get range generator
  range(5)        # returns 'range(0, 5)'
  range(2, 5)     # returns 'range(2, 5)'
  list(range(5))  # get contents out
  
  # function definition
  def add_two(a, b):
      return(a + b)
  
new_contents: #!/usr/bin/env python3
  
  # data types in Python3
  2       # integers and numbers
  "eggs"  # strings
  [1, 2]  # lists
  
  # multiple assignment
  a, b = 0, 1
  
  # reload local or any modules
  # Source: http://stackoverflow.com/a/14390676
  import imp
  imp.reload(module)
  
  # autoconcatenate strings, doesn't work with variables
  'Py' 'thon' # first way
  ('Py'
   'thon') # another way
  
  # get range generator
  range(5)        # returns 'range(0, 5)'
  range(2, 5)     # returns 'range(2, 5)'
  list(range(5))  # get contents out
  
  # function definition
  def add_two(a, b):
      return(a + b)
  
  # run quick script from CLI
  # python -c "print('Hello, World!')"
  
subject: add quick way to run script from CLI