code: def list_rules(region=None, key=None, keyid=None, profile=None):
      '''
      List, with details, all Cloudwatch Event rules visible in the current scope.
  
      CLI example::
  
          salt myminion boto_cloudwatch_event.list_rules region=us-east-1
      '''
      conn = _get_conn(region=region, key=key, keyid=keyid, profile=profile)
  
      try:
          ret = []
          NextToken = ''
          while NextToken is not None:
              args = {'NextToken': NextToken} if NextToken else {}
              r = conn.list_rules(**args)
              ret += r.get('Rules', [])
              NextToken = r.get('NextToken')
          return ret
      except ClientError as e:
          return {'error': __utils__['boto3.get_error'](e)f list_rules(region=None, key=None, keyid=None, profile=None):
      '''
      List, with details, all Cloudwatch Event rules visible in the current scope.
  
      CLI example::
  
          salt myminion boto_cloudwatch_event.list_rules region=us-east-1
      '''
      conn = _get_conn(region=region, key=key, keyid=keyid, profile=profile)
  
      try:
          ret = []
          NextToken = ''
          while NextToken is not None:
              args = {'NextToken': NextToken} if NextToken else {}
              r = conn.list_rules(**args)
              ret += r.get('Rules', [])
              NextToken = r.get('NextToken')
          return ret
      except ClientError as e:
          return {'error': __utils__['boto3.get_error'](e)}
docs: List, with details, all Cloudwatch Event rules visible in the current scope.
  
      CLI example::
  
          salt myminion boto_cloudwatch_event.list_rules region=us-east-1