code: def connection_from_url(url, **kw):
      
      scheme, host, port = get_host(url)
      if scheme == 'https':
          return HTTPSConnectionPool(host, port=port, **kw)
      else:
          return HTTPConnectionPool(host, port=port, **kw)
docs: Given a url, return an :class:`.ConnectionPool` instance of its host.
  
      This is a shortcut for not having to parse out the scheme, host, and port
      of the url before creating an :class:`.ConnectionPool` instance.
  
      :param url:
          Absolute URL string that must include the scheme. Port is optional.
  
      :param \**kw:
          Passes additional parameters to the constructor of the appropriate
          :class:`.ConnectionPool`. Useful for specifying things like
          timeout, maxsize, headers, etc.
  
      Example::
  
          >>> conn = connection_from_url('http://google.com/')
          >>> r = conn.request('GET', '/')