class_docstr: Provides convenience methods for accessing and modifying the rules table.
class_docstr_tok: ["Provides","convenience","methods","for","accessing","and","modifying","the","rules","table","."]
code: def _default_dynamo_kwargs(rule_name):
      return {
          "Key": {"RuleName": rule_name},
          "ConditionExpression": "attribute_exists(RuleName)",
      }
  
imports: from datetime import datetime, timedelta
  import boto3
  from streamalert.shared.helpers.dynamodb import ignore_conditional_failure
  from streamalert.shared.importer import import_folders
  from streamalert.shared.logger import get_logger
  from streamalert.shared.rule import Rule
label_desc: Use image node_id 7 for calling the RuleTable obj's underlying member method code with example usage: obj._default_dynamo_kwargs(rule_name) and returns: dict