code: def get_current_ci():
      if "GITHUB_WORKFLOW" in os.environ:
          return GITHUB
      elif "TRAVIS" in os.environ:
          return TRAVIS
      return None
  
imports: import argparse
  import errno
  import logging
  import os
  import signal
  import subprocess
  import sys
  import time
label_desc: Use image node_id 2 for calling a global function with example usage: get_current_ci() and returns: None, GITHUB, TRAVIS