text: from __future__ import print_function
  from __future__ import unicode_literals
  
  from builtins import str, bytes, dict, int
  
  import os
  import sys
  sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", ".."))
  
  from pattern.web import URL, DOM, plaintext
  from pattern.web import NODE, TEXT, COMMENT, ELEMENT, DOCUMENT
  
  # The pattern.web module has a number of convenient search engines, as demonstrated.
  # But often you will need to handle the HTML in web pages of your interest manually.
  # The DOM object can be used for this, similar to the Javascript DOM.
  # The DOM (Document Object Model) parses a string of HTML
  # and returns a tree of nested Element objects.
  # The DOM elements can then be searched by tag name, CSS id, CSS class, ...
  
  # For example, top news entries on Reddit are coded as:
  # <div class="_1poyrkZ7g36PawDueRza-J s1r3zmnv-7 bmeGah">
  #     ...
  #     <span class="y8HYJ-y_lTUHkQIc1mdCq yj3st6-1 kYJFRo">
  #     ...
  #         <a class="SQnoC3ObvgnGjWt90zD9Z " href="http://i.imgur.com/yDyPu8P.jpg">Bagel the bengal, destroyer of boxes</a>
  #     ...
  # </div>
  #
  # ... which - naturally - is a picture of a cat.
  url = URL("http://www.reddit.com/top/")
  dom = DOM(url.download(cached=True))
  #print(dom.body.content)
  for e in dom.by_tag("div._1poyrkZ7g36PawDueRza-J s1r3zmnv-7 bmeGah")[:5]: # Top 5 reddit entries.
      for a in e.by_tag("a.SQnoC3ObvgnGjWt90zD9Z")[:1]:
          print(plaintext(a.content))
          print(a.attrs["href"])
          print("")
  
  # The links in the HTML source code may be relative,
  # e.g., "../img.jpg" instead of "www.domain.com/img.jpg".
  # We can get the absolute URL by prepending the base URL.
  # However, this can get messy with anchors, trailing slashes and redirected URL's.
  # A good way to get absolute URL's is to use the module's abs() function:
  from pattern.web import abs
  url = URL("http://nodebox.net")
  for link in DOM(url.download()).by_tag("a"):
      link = link.attrs.get("href", "")
      link = abs(link, base=url.redirect or url.string)
      print(link)
  
  # The DOM object is a tree of nested Element and Text objects.
  # All objects inherit from Node (check the source code).
  
  # Node.type       : NODE, TEXT, COMMENT, ELEMENT or DOM
  # Node.parent     : Parent Node object.
  # Node.children   : List of child Node objects.
  # Node.next       : Next Node in Node.parent.children.
  # Node.previous   : Previous Node in Node.parent.children.
  
  # DOM.head        : Element with tag name "head".
  # DOM.body        : Element with tag name "body".
  
  # Element.tag     : Element tag name, e.g. "body".
  # Element.attrs   : Dictionary of tag attributes, e.g. {"class": "header"}
  # Element.content : Element HTML content as a string.
  # Element.source  : Element tag + content
  
  # Element.get_element_by_id(value)
  # Element.get_elements_by_tagname(value)
  # Element.get_elements_by_classname(value)
  # Element.get_elements_by_attribute(name=value)
  
  # You can also use shorter aliases (we prefer them):
  # Element.by_id(), by_tag(), by_class(), by_attr().
  
  # The tag name passed to Element.by_tag() can include
  # a class (e.g., "div.message") or an id (e.g., "div#header").
  
  # For example:
  # In the <head> tag, retrieve the <meta name="keywords"> element.
  # Get the string value of its "content" attribute and split into a list:
  dom = DOM(URL("https://www.apple.com/uk/").download(cached=True))
  kw = dom.head.by_attr(name="Description")[0]
  kw = kw.attrs["content"]
  print(kw)
  print("")
  
  # If you know CSS, you can also use short and handy CSS selectors:
  # http://www.w3.org/TR/CSS2/selector.html
  # Element(selector) will return a list of nested elements that match the given string.
  dom = DOM(URL("http://www.clips.ua.ac.be").download())
  for e in dom("div#ContentPlaceHolder1_ctl00_ctl01_Omkadering span div:contents p"):
      print(plaintext(e.content))
      print("")
  
  
  
  ######################################## Test Techcrunch - https://techcrunch.com/ ####################################
  
  print("#"*40, "Test Techcrunch", "#"*40)
  url = URL("https://techcrunch.com/startups/")
  dom = DOM(url.download(cached=True))
  
  for e in dom.by_tag("header.post-block__header")[:5]:
      for a in e.by_tag("h2.post-block__title")[:1]:
          print(plaintext(a.content))
          for h in a.by_tag("a.post-block__title__link")[:1]:
              print(h.attrs["href"])
          print("")
  print("\n")
  
  header = dom.by_class("river__title")[0]
  print(header.content)
  print("\n")
  
  
  title_image = dom.by_attr(name="msapplication-TileImage")[0]
  print(title_image.attrs['content'])
  print("\n")
  
  
  url = URL("https://techcrunch.com")
  dom = DOM(url.download(cached=True))
  for k in dom.by_class("post-block__title__link"):
      print(k.content.strip())
      print("")
  
  print("\n")
  
  for e in dom("header:post-block__header h2:post-block__title a:post-block__title__link"):
      print(e.content.strip())
      print(e.attrs["href"])
      print("")
  
  
  ################################ Test Habr - https://habr.com ####################################
  
  print("#"*40, "Test Habr", "#"*40)
  url = URL("https://habr.com")
  dom = DOM(url.download(cached=True))
  
  for e in dom.by_tag("h2.post__title")[:5]:
      for a in e.by_tag("a.post__title_link")[:1]:
          print(plaintext(a.content))
          print("")
  print("\n")
  
  for k in dom.by_class("post__hubs inline-list"):
      for p in k.by_tag("li.inline-list__item inline-list__item_hub"):
          for t in p.by_tag("a.inline-list__item-link hub-link "):
              print(t.content)
  print("\n")
  
  
  descr = dom.by_attr(name="description")[0]
  print(descr.attrs['content'])
  print("\n")
  
  for p in dom("div#broadcast_tabs_posts"):
      for e in p.by_class("content-list content-list_most-read"):
          for k in e.by_tag("a.post-info__title post-info__title_large"):
              print(plaintext(k.content))
          print("")