Error: redis too many results to unpack

What's Causing This Error

This error typically arises when you're trying to assign more values than variables available for unpacking. In the context of Redis, it's commonly seen during the use of pipeline operations or MGET commands, where multiple results are returned from Redis.

The problem occurs when you try to unpack these multiple results into fewer variables than the actual number of results. For instance, if Redis returns three results and you try to unpack this into only two variables, Python will throw a 'too many values to unpack' error.

Solution - Here's How To Resolve It

To solve this issue, ensure that the number of variables you're using to unpack results matches the number of results returned by Redis. If you are unsure of the number of results that will be returned, it's safer to assign the results to a single variable as a list or tuple.

In Python, if you assign the results to a list, you can then iterate over the list to handle each result individually.

Here is an example:

results = redis_instance.mget('key1', 'key2', 'key3')
for result in results:
    process(result)  # Replace this with your specific processing function

By doing this, even if Redis returns more or fewer results than expected, your code will not crash due to trying to unpack too many results.