Find the cheapest availability zone across all regions for an EC2 spot instance type

_install.sh

pip install sh

cheapest.py

from datetime import datetime
import json
from pprint import pprint

from sh import aws

regions = [ 'ap-northeast-1',
            'ap-southeast-1',
            'ap-southeast-2',
            'eu-central-1',
            'eu-west-1',
            'sa-east-1',
            'us-east-1',
            'us-west-1',
            'us-west-2']

instance_type = 'm3.xlarge'

prices = []
start_time = datetime.utcnow().isoformat()

for region in regions:
    _prices = aws('ec2',
                  'describe-spot-price-history',
                  instance_type=instance_type,
                  start_time='%sZ' % start_time,
                  product_description='Linux/UNIX',
                  region=region)
    _prices = json.loads(str(_prices))
    prices = prices + [(p['SpotPrice'], p['AvailabilityZone'])
                       for p in _prices['SpotPriceHistory']]

pprint(sorted(prices))

output.py

[(u'0.032700', u'us-east-1e'),
 (u'0.033400', u'us-east-1a'),
 (u'0.033400', u'us-east-1d'),
 (u'0.034100', u'us-west-1c'),
 (u'0.034500', u'us-west-1a'),
 (u'0.038400', u'us-east-1c'),
 (u'0.038700', u'us-west-2c'),
 (u'0.040400', u'ap-northeast-1a'),
 (u'0.040900', u'sa-east-1a'),
 (u'0.041000', u'us-west-2a'),
 (u'0.041100', u'us-west-2b'),
 (u'0.041200', u'ap-northeast-1c'),
 (u'0.041300', u'eu-west-1c'),
 (u'0.041400', u'eu-central-1b'),
 (u'0.042000', u'ap-southeast-2b'),
 (u'0.042000', u'eu-west-1b'),
 (u'0.042500', u'eu-west-1a'),
 (u'0.043500', u'sa-east-1c'),
 (u'0.044600', u'ap-southeast-1a'),
 (u'0.044600', u'ap-southeast-2a'),
 (u'0.045100', u'ap-southeast-1b'),
 (u'0.047500', u'eu-central-1a'),
 (u'0.381100', u'sa-east-1b')]