old_contents: # -*- coding: utf-8 -*-
  
  
  import time
  import requests
  import logging
  
  try:
      from . import consts
  except (ValueError, SystemError):
      import consts
  
  
  def req(session, method, url, params=None, retry=3, retry_delay=1, host=None):
      session = session if session else requests.Session()
      url = '%s%s' % (consts.dp_testing_path if not host else host, url)
  
      for e in range(retry):
          try:
              if method == 'get':
                  o = session.get(url, data=params)
              elif method == 'post':
                  o = session.post(url, data=params)
              elif method == 'put':
                  o = session.put(url, data=params)
              elif method == 'delete':
                  o = session.delete(url, data=params)
              elif method == 'head':
                  o = session.head(url, data=params)
              else:
                  raise Exception('Invalid method.')
  
              return session, o
  
          except Exception as e:
              logging.exception(e)
  
              time.sleep(retry_delay)
  
      logging.error(url)
      logging.error(method)
  
      assert False
  
  
  def req_text(method, url, params=None, retry=3, retry_delay=1, session=None, host=None):
      session, o = req(
          session=session, url=url, method=method, params=params, retry=retry, retry_delay=retry_delay, host=host)
  
      return session, o.status_code, o.text
  
  
  def expecting_text(
          method, url, expected, expect_code=200, params=None, retry=3, retry_delay=1, session=None, host=None):
      session, status_code, response = req_text(
          url=url, method=method, params=params, retry=retry, retry_delay=retry_delay, session=session, host=host)
  
      if status_code == expect_code and (expected is None or response == expected):
          return session
  
      logging.error('URL : [%s] %s' % (method.upper(), url))
      logging.error('Expected : %s, %s' % (expect_code, expected))
      logging.error('Resulting : %s, %s' % (status_code, response))
  
      assert False
  
new_contents: # -*- coding: utf-8 -*-
  
  
  import time
  import requests
  import logging
  
  try:
      from . import consts
  except (ValueError, SystemError):
      import consts
  
  
  def req(session, method, url, params=None, retry=3, retry_delay=1, host=None):
      session = session if session else requests.Session()
      url = '%s%s' % (consts.dp_testing_path if host is None else host, url)
  
      for e in range(retry):
          try:
              if method == 'get':
                  o = session.get(url, data=params)
              elif method == 'post':
                  o = session.post(url, data=params)
              elif method == 'put':
                  o = session.put(url, data=params)
              elif method == 'delete':
                  o = session.delete(url, data=params)
              elif method == 'head':
                  o = session.head(url, data=params)
              else:
                  raise Exception('Invalid method.')
  
              return session, o
  
          except Exception as e:
              logging.exception(e)
  
              time.sleep(retry_delay)
  
      logging.error(url)
      logging.error(method)
  
      assert False
  
  
  def req_text(method, url, params=None, retry=3, retry_delay=1, session=None, host=None):
      session, o = req(
          session=session, url=url, method=method, params=params, retry=retry, retry_delay=retry_delay, host=host)
  
      return session, o.status_code, o.text
  
  
  def expecting_text(
          method, url, expected, expect_code=200, params=None, retry=3, retry_delay=1, session=None, host=None):
      session, status_code, response = req_text(
          url=url, method=method, params=params, retry=retry, retry_delay=retry_delay, session=session, host=host)
  
      if status_code == expect_code and (expected is None or response == expected):
          return session
  
      logging.error('URL : [%s] %s' % (method.upper(), url))
      logging.error('Expected : %s, %s' % (expect_code, expected))
      logging.error('Resulting : %s, %s' % (status_code, response))
  
      assert False
  
subject: use `is None` instead of `not`