old_contents: from __future__ import print_function
  import re
  import requests
  from lxml.html import parse
  from requests.exceptions import ConnectionError
  
  def check_home(url):
      doc = parse(url).getroot()
      search_button = doc.cssselect("#btsearch")
      assert(search_button[0].value == "Search")
      print("OK")
  
  def check_search_page(host):
      data = dict(
          species="mouse"
          , group="BXD"
          , type="Hippocampus mRNA"
          , dataset="HC_M2_0606_P"
          , search_terms_or=""
          , search_terms_and="MEAN=(15 16) LRS=(23 46)")
      result = requests.get(host+"/search", params=data)
      found = result.text.find("/show_trait?trait_id=1435395_s_at&dataset=HC_M2_0606_P")
      assert(found >= 0)
      print("OK")
      check_traits_page(host, "/show_trait?trait_id=1435395_s_at&dataset=HC_M2_0606_P")
  
  def check_traits_page(host, traits_url):
      from link_checker import check_page
      doc = parse(host+traits_url).getroot()
      traits_form = doc.forms[1]
      assert(traits_form.fields["corr_dataset"] == "HC_M2_0606_P")
      print("OK")
      check_page(host, host+traits_url)
  
  def check_main_web_functionality(args_obj, parser):
      print("")
      print("Checking main web functionality...")
      host = args_obj.host
      check_home(host)
      check_search_page(host)
  
new_contents: from __future__ import print_function
  import re
  import requests
  from lxml.html import parse
  from link_checker import check_page
  from requests.exceptions import ConnectionError
  
  def check_home(url):
      doc = parse(url).getroot()
      search_button = doc.cssselect("#btsearch")
      assert(search_button[0].value == "Search")
      print("OK")
  
  def check_search_page(host):
      data = dict(
          species="mouse"
          , group="BXD"
          , type="Hippocampus mRNA"
          , dataset="HC_M2_0606_P"
          , search_terms_or=""
          , search_terms_and="MEAN=(15 16) LRS=(23 46)")
      result = requests.get(host+"/search", params=data)
      found = result.text.find("/show_trait?trait_id=1435395_s_at&dataset=HC_M2_0606_P")
      assert(found >= 0)
      print("OK")
      check_traits_page(host, "/show_trait?trait_id=1435395_s_at&dataset=HC_M2_0606_P")
  
  def check_traits_page(host, traits_url):
      doc = parse(host+traits_url).getroot()
      traits_form = doc.forms[1]
      assert(traits_form.fields["corr_dataset"] == "HC_M2_0606_P")
      print("OK")
      check_page(host, host+traits_url)
  
  def check_main_web_functionality(args_obj, parser):
      print("")
      print("Checking main web functionality...")
      host = args_obj.host
      check_home(host)
      check_search_page(host)
  
subject: Move import to the top of the page.