python - Retrieve all items from DynamoDB using query?

Question

I am trying to retrieve all items in a dynamodb table using a query. Below is my code:

import boto.dynamodb2
from boto.dynamodb2.table import Table
from time import sleep

c    = boto.dynamodb2.connect_to_region(aws_access_key_id="XXX",aws_secret_access_key="XXX",region_name="us-west-2")

tab  = Table("rip.irc",connection=c)

x    = tab.query()

for i in x:
    print i
    sleep(1)

However, I recieve the following error:

ValidationException: ValidationException: 400 Bad Request
{'message': 'Conditions can be of length 1 or 2 only', '__type': 'com.amazon.coral.validate#ValidationException'}

The code I have is pretty straightforward and out of the boto dynamodb2 docs, so I am not sure why I am getting the above error. Any insights would be appreciated (new to this and a bit lost). Thanks

EDIT: I have both an hash key and a range key. I am able to query by specific hash keys. For example,

x = tab.query(hash__eq="2014-01-20 05:06:29")

How can I retrieve all items though?

Answer 1

Ahh ok, figured it out. If anyone needs:

You can't use the query method on a table without specifying a specific hash key. The method to use instead is scan. So if I replace:

x    = tab.query()

with

x    = tab.scan()

I get all the items in my table.