boto_cloudwatch_query.py

#!/usr/bin/python
#
# Example code for specifying multiple dimensions in a 
# query of Amazon EC2 CloudWatch using the boto library.
#
# Boto may be downloaded here: http://code.google.com/p/boto

from datetime import datetime, timedelta
from boto import connect_cloudwatch
from boto.ec2.cloudwatch.metric import Metric
 
end = datetime.now()
start = end - timedelta(hours=24)
statistic = 'Average'
unit = 'Count'
period = 60
 
m = Metric()
m.connection = connect_cloudwatch()
m.name = 'HealthyHostCount'
m.namespace = "AWS/ELB"
m.dimensions = {u'LoadBalancerName': u'example-lb-name', 
		u'AvailabilityZone': u'us-east-1a'}	

rs = m.query(start, end, statistic, unit, period)
 
print rs