code: def add_gstreamer_packages():
      import os
      import sys
      from distutils.sysconfig import get_python_lib
  
      dest_dir = get_python_lib()
  
      packages = [
          "gobject",
          "glib",
          "pygst",
          "pygst.pyc",
          "pygst.pth",
          "gst-0.10",
          "pygtk.pth",
          "pygtk.py",
          "pygtk.pyc",
      ]
  
      python_version = sys.version[:3]
      global_path = os.path.join("/usr/lib", "python" + python_version)
      global_sitepackages = [
          os.path.join(
              global_path, "dist-packages"
          ),  # for Debian-based
          os.path.join(global_path, "site-packages"),
      ]  # for others
  
      for package in packages:
          for pack_dir in global_sitepackages:
              src = os.path.join(pack_dir, package)
              dest = os.path.join(dest_dir, package)
              if not os.path.exists(dest) and os.path.exists(src):
                  os.symlink(src, dest)
  
label_desc: Use image node_id 1 for calling a global function with example usage: add_gstreamer_packages() without return types