class_docstr: Browser tree for Python module.
  
  Uses TreeItem as the basis for the structure of the tree.
  Used by both browsers.
class_docstr_tok: ["Browser","tree","for","Python","module",".","Uses","TreeItem","as","the","basis","for","the","structure","of","the","tree",".","Used","by","both","browsers","."]
docstr: Return True if Python file.
docstr_tok: ["Return","True","if","Python","file","."]
code: def IsExpandable(self):
      "Return True if Python file."
      return is_browseable_extension(self.file)
  
imports: import os
  import pyclbr
  import sys
  from idlelib.config import idleConf
  from idlelib import pyshell
  from idlelib.tree import TreeNode, TreeItem, ScrolledCanvas
  from idlelib.util import py_extensions
  from idlelib.window import ListedToplevel
label_desc: Use image node_id 6 for calling the ModuleBrowserTreeItem obj's underlying member method code with example usage: obj.IsExpandable() and returns: is_browseable_extension