code: def _global_vars():
      return {
          name: str(val)
          for name, val in globals().items()
          if name[0] != "_" and isinstance(val, str)
      }
  
imports: import fnmatch
  import os
  import re
  import sys
  import tempfile
  import guild
  from guild import _test
  from guild import config
  from guild import pip_util
  from guild import util
label_desc: Use image node_id 7 for calling a global function with example usage: _global_vars() and returns: unknown