Save Python dict to Redis hash

dict_to_redis.py

def dict_to_redis_hset(r, hkey, dict_to_store):
    """
    Saves `dict_to_store` dict into Redis hash, where `hkey` is key of hash.

    >>> import redis
    >>> r = redis.StrictRedis(host='localhost')
    >>> d = {'a':1, 'b':7, 'foo':'bar'}
    >>> dict_to_redis_hset(r, 'test', d)
    True
    >>> r.hgetall('test')
    {'a':1, 'b':7, 'foo':'bar'}
    """
    return all([r.hset(hkey, k, v) for k, v in dict_to_store.items()])

Or you could simply use hmset: https://redis-py.readthedocs.org/en/latest/#redis.StrictRedis.hmset

r.hmset(hkey, dict_to_store)

Redis supports setting multiple key:value pairs on a hash as a single operation so this is not only faster but more atomic.

@endophage - great catch, thanks for the code review :)

Just learning redis now but wouldn't you want a pipeline here?

hey!
please upload the definition of the function dict_to_redis_hset

hmset is deprecated

Given that hmset is deprecated, for dictionaries we can use hset, like this (do not skip the named mapping arg):

r.hset(hkey, mapping=dict_to_store)

See in redis-py docs.

Does anyone know how to store a dict value? I get this error when I try to map a key to a dict value

DataError: Invalid input of type: 'dict'. Convert to a bytes, string, int or float first.

If someone notices that even with mapping attribute you get DataError: Invalid input of type: 'dict'. Convert to a bytes, string, int or float first. when trying to set dict as value, check that values inside the dict are also ints, bytes or strs. I was trying to hset with ...mapping={'mapping': {'nested_mapping': 'which i have not noticed'}}