code: def check(domain, prefix, code, strategies='*'):
      
      if strategies == '*' or 'dns_txt' in strategies:
          if check_dns_txt(domain, prefix, code):
              return True
      if strategies == '*' or 'dns_cname' in strategies:
          if check_dns_cname(domain, prefix, code):
              return True
      if strategies == '*' or 'meta_tag' in strategies:
          if check_meta_tag(domain, prefix, code):
              return True
      if strategies == '*' or 'html_file' in strategies:
          if check_html_file(domain, prefix, code):
              return True
      return False
docs: Check the ownership of a domain by going thru a serie of strategies.
      If at least one strategy succeed, the domain is considered verified,
      and this methods returns true.
  
      The prefix is a fixed DNS safe string like "yourservice-domain-verification"
      and the code is a random value associated to this domain. It is advised to
      prefix the code by a fixed value that is unique to your service like
      "yourservice2k3dWdk9dwz".
  
      By default all available strategies are tested. You can limit the check
      to a limited set of strategies by passing a comma separated list of
      strategy names like "nds_txt,dns_cname". See the "strategies" module
      for a full list of avaialble strategies.