def __init__(self, table):
        self._table = table
        self._columns = []
        self._commands = []
        self.engine = None
        self.charset = None
        self.collation = None
Queries Amazon EC2 to see if the specified availability zone exists.
dataset/ETHPy150Open sdispater/orator/orator/schema/blueprint.py/Blueprint.__init__--crossover with--dataset/ETHPy150Open AppScale/appscale-tools/lib/agents/ec2_agent.py/EC2Agent.does_zone_exist