# from numpy array to redis

import redis

r = redis.StricteRedis(host='localhost', port=6379)


def array_to_string(array):
  try:
    a = a.ravel().tostring()
    a = str(a) # This for read from redis, to avoid UnicodeDecoderError
    # UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 0: invalid start byte
    return a
  except:
    pass

def string_to_array(string, shape=(-1,300)):
  try:
    # 'b\'\\xff%Z\\xce\\xd1J\\xe .............''
    s = eval(s) # turn back to b-string
    array = np.fromstring(s, dtype=np.float32).reshape(shape) # Note data type np.float32, if you got 150, probaly you are using float64
    return array
  except:
    pass