code: def read_retry(sensor, pin, retries=15, delay_seconds=2, platform=None):
      
      for i in range(retries):
          humidity, temperature = read(sensor, pin, platform)
          if humidity is not None and temperature is not None:
              return (humidity, temperature)
          time.sleep(delay_seconds)
      return (None, None)
docs: Read DHT sensor of specified sensor type (DHT11, DHT22, or AM2302) on
      specified pin and return a tuple of humidity (as a floating point value
      in percent) and temperature (as a floating point value in Celsius).
      Unlike the read function, this read_retry function will attempt to read
      multiple times (up to the specified max retries) until a good reading can be
      found. If a good reading cannot be found after the amount of retries, a tuple
      of (None, None) is returned. The delay between retries is by default 2
      seconds, but can be overridden.