CODEWITHSUNDEEP
pythonamazon-web-servicesamazon-dynamodb
ron rothman
ron rothman

Reputation: 18138

Does boto.dynamodb2 support storing a dict of dicts?

Solution: Updating to the brand-new boto 2.35.2 fixed the problem.

How can I store a dict of dicts in DynamoDB using boto?

The straightforward approach that I've been trying doesn't seem to work. Trying to save an item defined this way:

data = {
    'id': '123456',
    'foo': {'hello': 'world'}
}

item = Item(my_table, data=data)
item.save(overwrite=True)

generates this exception:

TypeError: Unsupported type "<type 'dict'>" for value "{'hello': 'world'}"

I've seen conflicting information on the web about whether this is supported. I can't get it to work; am using boto 2.35.1.

Here's a complete example that demonstrates the problem:

import boto.dynamodb2
from boto.dynamodb2.fields import HashKey
from boto.dynamodb2.table import Table
from boto.dynamodb2.items import Item

conn = boto.dynamodb2.connect_to_region('us-east-1')

my_table = Table.create('my_table',
                        connection=conn,
                        schema=[
                            HashKey('id')
                        ])

my_table = Table('my_table')

data = {
    'id': '123456',
    'foo': {'hello': 'world'}
}

item = Item(my_table, data=data)
item.save(overwrite=True)

Upvotes: 0

Views: 851

Answers (1)

NoamG
NoamG

Reputation: 1161

DynamoDB API now supports map and list object:

http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/HowItWorks.NamingRulesDataTypes.html#HowItWorks.DataTypes

http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataFormat.html

And seams that last boto version (yesterday at the time I answered) added this too:

http://boto.readthedocs.org/en/latest/releasenotes/v2.35.2.html

but personally I didn't play with yet.

Upvotes: 1

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