text: import os
  from pelican import signals
  
  
  def add_gallery_post(generator):
  
      contentpath = generator.settings.get('PATH')
      gallerycontentpath = os.path.join(contentpath,'images/gallery')
  
      for article in generator.articles:
          if 'gallery' in article.metadata.keys():
              album = article.metadata.get('gallery')
              galleryimages = []
  
              articlegallerypath=os.path.join(gallerycontentpath, album)
  
              if(os.path.isdir(articlegallerypath)):
                  for i in os.listdir(articlegallerypath):
                      if os.path.isfile(os.path.join(os.path.join(gallerycontentpath, album), i)):
                          galleryimages.append(i)
  
              article.album = album
              article.galleryimages = sorted(galleryimages)
  
  
  def generate_gallery_page(generator):
  
      contentpath = generator.settings.get('PATH')
      gallerycontentpath = os.path.join(contentpath,'images/gallery')
  
      for page in generator.pages:
          if page.metadata.get('template') == 'gallery':
              gallery = dict()
  
              for a in os.listdir(gallerycontentpath):
                  if os.path.isdir(os.path.join(gallerycontentpath, a)):
  
                      for i in os.listdir(os.path.join(gallerycontentpath, a)):
                          if os.path.isfile(os.path.join(os.path.join(gallerycontentpath, a), i)):
                              gallery.setdefault(a, []).append(i)
                      gallery[a].sort()
  
              page.gallery=gallery
  
  
  def register():
      signals.article_generator_finalized.connect(add_gallery_post)
      signals.page_generator_finalized.connect(generate_gallery_page)
  