code: def prepare_vc(fr, to):
      for p in os.listdir(fr):
          fr_p = os.path.join(fr, p)
          to_p = os.path.join(to, p)
  
          if not os.path.exists(to_p):
              print >> sys.stderr, "install %s -> %s" % (fr_p, to_p)
  
              os.link(fr_p, to_p)
  
imports: import sys
  import os
  import re
  import subprocess
  import signal
  import time
  import json
  import argparse
  import errno
  import process_command_files
  import process_whole_archive_option
label_desc: Use image node_id 8 for calling a global function with example usage: prepare_vc(fr, to) without return types