old_contents: #!/usr/bin/env python3
  
  """
  Bing's wallpaper of the day background setter
  
  Hits Bing's wallpaper API and compares the wallpaper of the day
  with the OS's current one.
  
  If they are the same, the script does nothing.
  
  If they are different, it downloads the new wallpaper and sets it,
  then remove the old one.
  
  Usage:
  ======
  (1) Put this script in your startup applications.
  """
  
  import os
  import requests
  import json
  
  # Perform a GET to Bing's wallpapers API
  url = 'https://www.bing.com/HPImageArchive.aspx?format=js&idx=0&n=1&mkt=en-US'
  response = requests.get(url)
  
  data = json.loads(response.text)
  image_url_pathname = data['images'][0]['url']
  image_filename = image_url_pathname.split('/')[-1]
  
  local_images_dir = '{}/Pictures/wallpaper/'.format(os.path.expanduser('~'))
  local_images = os.listdir(local_images_dir)
  
  # Check if the current background is not the same as Bing's
  if not local_images or local_images[0] != image_filename:
      image_url = 'https://www.bing.com{}'.format(image_url_pathname)
  
      # Perform a GET to the image URL
      image = requests.get(image_url).content
  
      with open(local_images_dir + image_filename, 'wb') as handler:
          handler.write(image)
  
      gsettings_command_str = (
          '/usr/bin/gsettings set org.gnome.desktop.background picture-uri ' +
          '"file://' + local_images_dir + image_filename + '"'
      )
      os.system(gsettings_command_str)
  
      # Remove old image if it exists
      if local_images:
          os.remove(local_images[0])
  
new_contents: #!/usr/bin/env python3
  
  """
  Bing's wallpaper of the day background setter
  
  Hits Bing's wallpaper API and compares the wallpaper of the day
  with the OS's current one.
  
  If they are the same, the script does nothing.
  
  If they are different, it downloads the new wallpaper and sets it,
  then remove the old one.
  
  Usage:
  ======
  (1) Put this script in your startup applications.
  """
  
  import os
  import requests
  
  # Perform a GET to Bing's wallpapers API
  url = 'https://www.bing.com/HPImageArchive.aspx?format=js&idx=0&n=1&mkt=en-US'
  response = requests.get(url)
  
  data = response.json()
  image_url_pathname = data['images'][0]['url']
  image_filename = image_url_pathname.split('/')[-1]
  
  local_images_dir = '{}/Pictures/wallpaper/'.format(os.path.expanduser('~'))
  local_images = os.listdir(local_images_dir)
  
  # Check if the current background is not the same as Bing's
  if not local_images or local_images[0] != image_filename:
      image_url = 'https://www.bing.com{}'.format(image_url_pathname)
  
      # Perform a GET to the image URL
      image_content = requests.get(image_url).content
  
      with open(local_images_dir + image_filename, 'wb') as image_file:
          image_file.write(image_content)
  
      gsettings_command_str = (
          '/usr/bin/gsettings set org.gnome.desktop.background picture-uri ' +
          '"file://' + local_images_dir + image_filename + '"'
      )
      os.system(gsettings_command_str)
      print('Success!\n')
  
      # Remove old image if it exists
      if local_images:
          os.remove(local_images[0])
  else:
      print('You already have the latest Bing wallpaper!\n')
  
subject: Update background.py