code: def get_repo_slug():
      ci = get_current_ci()
      if ci == GITHUB:
          return os.environ["GITHUB_REPOSITORY"]
      elif ci == TRAVIS:
          return os.environ["TRAVIS_REPO_SLUG"]
      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 4 for calling a global function with example usage: get_repo_slug() and returns: None, os, os