code: def _split_env_line(s):
      parts = s.split("=", 1)
      if len(parts) == 1:
          parts.append("")
      return _strip_export(parts[0]), parts[1]
  
imports: import logging
  import os
  import subprocess
  import sys
  from guild import config
  from guild import file_util
  from guild import log
  from guild import remote
  from guild import util
  from guild import var
label_desc: Use image node_id 18 for calling a global function with example usage: _split_env_line(s) and returns: _strip_export,  parts