docstr: Simple validity check for menu file path
docstr_tok: ["Simple","validity","check","for","menu","file","path"]
code: def PathOk(self):
      "Simple validity check for menu file path"
      pathOk = True
      path = self.path.get()
      path.strip()
      if not path:  # no path specified
          tkMessageBox.showerror(
              title="File Path Error",
              message="No help file path specified.",
              parent=self,
          )
          self.entryPath.focus_set()
          pathOk = False
      elif path.startswith(("www.", "http")):
          pass
      else:
          if path[:5] == "file:":
              path = path[5:]
          if not os.path.exists(path):
              tkMessageBox.showerror(
                  title="File Path Error",
                  message="Help file path does not exist.",
                  parent=self,
              )
              self.entryPath.focus_set()
              pathOk = False
      return pathOk
  
file_path: catboost/contrib/tools/python/src/Lib/idlelib/configHelpSourceEdit.py
imports: import os
  import sys
  from Tkinter import *
  import tkMessageBox
  import tkFileDialog
label_desc: Use image node_id 5 for calling the GetHelpSourceDialog obj's underlying member method code with example usage: obj.PathOk() and returns: pathOk