code: def activate(ctx):
      """Activate Streamlit by entering your email."""
      if not ctx.invoked_subcommand:
          Credentials.get_current().activate()
  
imports: import os
  import sys
  from typing import Any, Dict, List, Optional
  import click
  import streamlit.runtime.caching
  import streamlit.runtime.legacy_caching
  import streamlit.web.bootstrap
  from streamlit import config
  from streamlit.config_option import ConfigOption
  from streamlit.runtime.credentials import Credentials, check_credentials
  from streamlit.web.cache_storage_manager_config import create_default_cache_storage_manager
label_desc: Use image node_id 17 for calling a global function with example usage: activate(ctx) without return types