class_docstr: A class to load, modify, and display the StreamAlertCLI Config
docstr: Lookup a value based on its key
docstr_tok: ["Lookup","a","value","based","on","its","key"]
code: def get(self, key, default=None):
      """Lookup a value based on its key"""
      return self.config.get(key, default)
  
imports: import json
  import os
  import re
  import shutil
  import string
  import tempfile
  from streamalert.apps import StreamAlertApp
  from streamalert.shared import CLUSTERED_FUNCTIONS, config, metrics
  from streamalert.shared.logger import get_logger
  from streamalert_cli.terraform import TERRAFORM_FILES_PATH
  from streamalert_cli.apps.helpers import save_app_auth_info
  from streamalert_cli.helpers import continue_prompt
label_desc: Use image node_id 5 for calling the CLIConfig obj's underlying member method code with example usage: obj.get(key, default) and returns: self