code: def set_address():
      
      global STATSD_ADDR
      connection_string = os.getenv('STATSD')
      if connection_string:
          url = urlparse.urlparse(connection_string)
          STATSD_ADDR = (url.hostname, url.port)
      else:
          STATSD_ADDR = (os.getenv('STATSD_HOST', 'localhost'),
                         int(os.getenv('STATSD_PORT', 8125)))
docs: Set the (host, port) to connect to from the environment.
  
      If the environment is updated, a call to this function will update the
      address this client connects to.
  
      This function will prefer to use the ``STATSD`` connection string
      environment variable, but will fall back to using the ``STATSD_HOST``
      and ``STATSD_PORT``.