old_contents: from collections import namedtuple
  
  CONTENT_TYPES = [
      ("core.ArticlePage", "Article"),
      ("core.SectionPage", "Section"),
  ]
  
  ENDPOINTS = [
      ("page", "api/v1/pages")
  ]
  
  SESSION_VARS = namedtuple(
      "SESSION_VARS",
      ["first", "second", ]
  )
  
  ARTICLE_SESSION_VARS = SESSION_VARS(
      first=("url", "content_type"),
      second="parent_page_id"
  )
  
  API_PAGES_ENDPOINT = "/api/v2/pages/"
  API_IMAGES_ENDPOINT = "/api/v2/images/"
  
new_contents: from collections import namedtuple
  
  CONTENT_TYPES = [
      ("core.ArticlePage", "Article"),
      ("core.SectionPage", "Section"),
  ]
  
  ENDPOINTS = [
      ("page", "api/v1/pages")
  ]
  
  SESSION_VARS = namedtuple(
      "SESSION_VARS",
      ["first", "second", ]
  )
  
  ARTICLE_SESSION_VARS = SESSION_VARS(
      first=("url", "article_content_type"),
      second="article_parent_page_id"
  )
  
  API_PAGES_ENDPOINT = "/api/v2/pages/"
  API_IMAGES_ENDPOINT = "/api/v2/images/"
  
subject: Change article session variable names