docs: def curlrequests(curl_string, **kwargs):
      """Use tPool to request for curl string.
      If kwargs contains the req which hasattr request method, like req=requests.
  
      :param curl_string: standard curl string.
      :type curl_string: str
      :param kwargs: valid kwargs for tPool.
      :type curl_string: dict
  
      Basic Usage::
  
          from torequests.utils import curlrequests
  
  
          r = curlrequests('''curl 'http://p.3.cn/' -H 'Connection: keep-alive' -H 'Cache-Control: max-age=0' -H 'Upgrade-Insecure-Requests: 1' -H 'User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.119 Safari/537.36' -H 'DNT: 1' -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8' -H 'Accept-Encoding: gzip, deflate' -H 'Accept-Language: zh-CN,zh;q=0.9,en;q=0.8' -H 'If-None-Match: "55dd9090-264"' -H 'If-Modified-Since: Wed, 26 Aug 2015 10:10:24 GMT' --compressed''', retry=1)
          print(r.text)
      """
      req = kwargs.pop('req', tPool())
      kwargs.update(curlparse(curl_string))
      return req.request(**kwargs)