code: def list(gandi, id, altnames, csr, cert, all_status, status, dates, limit):
      
      options = {'items_per_page': limit}
  
      if not all_status:
          options['status'] = ['valid', 'pending']
  
      output_keys = ['cn', 'plan']
  
      if id:
          output_keys.append('id')
  
      if status:
          output_keys.append('status')
  
      if dates:
          output_keys.extend(['date_created', 'date_end'])
  
      if altnames:
          output_keys.append('altnames')
  
      if csr:
          output_keys.append('csr')
  
      if cert:
          output_keys.append('cert')
  
      result = gandi.certificate.list(options)
      for num, cert in enumerate(result):
          if num:
              gandi.separator_line()
          cert['plan'] = package_desc(gandi, cert['package'])
          output_cert(gandi, cert, output_keys)
  
      return result
docs: List certificates.