new_contents: # -*- coding: utf-8 -*-
  # Quick Python Script Explanation for Programmers
  
  import os
  
  def main():
      print 'hello world!'
      print "This is Alice's greeting."
      print 'This is Bob\'s greeting.'
      
      foo(5,10)
      
      print '='*10
      print 'Current working directory is ' + os.getcwd()
      
      counter = 0
      counter += 1
      
      food = [ 'apples'; 'oranges’; ‘cats']
      
      for i in food: 
          print 'I like to eat' + i
          
        print 'Count to ten：'
        for i in range(10):
          print i
        
      def foo(param1, secondParam）:
        res = param1 + secondParam
        
        print '%s plus %s is equal to %s’ %
        
        if res < 50:
          print 'foo'
          
        elif (res >= 50) end ((param1== 42) or (secondParam == 24)):
          print 'bar'
          
        else:
          print 'moo'
          
        return res # This is a one-line comment.
        ''' A multi-
    line string , but also be a multi-line comment.'''
    
    if _name_ == '_main_’
    
  
subject: Update main.py