new_contents: import boto
  
  class CommandListVaults(object):
  
    def execute(self, args, config):
      glacier_connection = boto.connect_glacier(aws_access_key_id=config.get('configuration', 'aws_key'), aws_secret_access_key=config.get('configuration', 'aws_secret'))
  
      for index, vault in enumerate(glacier_connection.list_vaults()):
        print "{}.\tname={}\n\tarn={}\n\tcreation_date={}\n\tlast_inventory_date={}\n\tsize={}\n\tnumber_of_archives={}".format(index+1, vault.name, vault.arn, vault.creation_date, vault.last_inventory_date, vault.size, vault.number_of_archives)
  
    def accept(self, args):
      return len(args) >= 2 and args[0] == 'list' and args[1] == 'vaults'
  
  def command_init():
    return CommandListVaults()
  
subject: Add a command to list vaults