code: def get_tk_patchlevel():
      global _tk_patchlevel
      if _tk_patchlevel is None:
          tcl = tkinter.Tcl()
          patchlevel = tcl.call("info", "patchlevel")
          m = re.match(r"(\d+)\.(\d+)([ab.])(\d+)$", patchlevel)
          major, minor, releaselevel, serial = m.groups()
          major, minor, serial = int(major), int(minor), int(serial)
          releaselevel = {"a": "alpha", "b": "beta", ".": "final"}[
              releaselevel
          ]
          if releaselevel == "final":
              _tk_patchlevel = major, minor, serial, releaselevel, 0
          else:
              _tk_patchlevel = major, minor, 0, releaselevel, serial
      return _tk_patchlevel
  
file_path: catboost/contrib/tools/python/src/Lib/lib-tk/test/test_ttk/support.py
imports: import functools
  import re
  import unittest
  import Tkinter
  import _tkinter
label_desc: Use image node_id 4 for calling a global function with example usage: get_tk_patchlevel() and returns: _tk_patchlevel