import osimport sysimport linecache from TreeWidget import TreeNode, TreeItem, ScrolledCanvasfrom ObjectBrowser import ObjectTreeItem, make_objecttreeitem def StackBrowser(root, flist=None, tb=None, top=None):    if top is None:        from Tkinter import Toplevel        top = Toplevel(root)    sc = ScrolledCanvas(top, bg="white", highlightthickness=0)    sc.frame.pack(expand=1, fill="both")    item = StackTreeItem(flist, tb)    node = TreeNode(sc.canvas, None, item)    node.expand() class StackTreeItem(TreeItem):     def __init__(self, flist=None, tb=None):        self.flist = flist        self.stack = self.get_stack(tb)        self.text = self.get_exception()     def get_stack(self, tb):        if tb is None:            tb = sys.last_traceback        stack = []        if tb and tb.tb_frame is None:            tb = tb.tb_next        while tb is not None:            stack.append((tb.tb_frame, tb.tb_lineno))            tb = tb.tb_next        return stack     def get_exception(self):        type = sys.last_type        value = sys.last_value        if hasattr(type, "__name__"):            type = type.__name__        s = str(type)        if value is not None:            s = s + ": " + str(value)        return s     def GetText(self):        return self.text     def GetSubList(self):        sublist = []        for info in self.stack:            item = FrameTreeItem(info, self.flist)            sublist.append(item)        return sublist class FrameTreeItem(TreeItem):     def __init__(self, info, flist):        self.info = info        self.flist = flist     def GetText(self):        frame, lineno = self.info        try:            modname = frame.f_globals["__name__"]        except:            modname = "?"        code = frame.f_code        filename = code.co_filename        funcname = code.co_name        sourceline = linecache.getline(filename, lineno)        sourceline = sourceline.strip()        if funcname in ("?", "", None):            item = "%s, line %d: %s" % (modname, lineno, sourceline)        else:            item = "%s.%s(...), line %d: %s" % (modname, funcname,                                             lineno, sourceline)        return item     def GetSubList(self):        frame, lineno = self.info        sublist = []        if frame.f_globals is not frame.f_locals:            item = VariablesTreeItem("<locals>", frame.f_locals, self.flist)            sublist.append(item)        item = VariablesTreeItem("<globals>", frame.f_globals, self.flist)        sublist.append(item)        return sublist     def OnDoubleClick(self):        if self.flist:            frame, lineno = self.info            filename = frame.f_code.co_filename            if os.path.isfile(filename):                self.flist.gotofileline(filename, lineno) class VariablesTreeItem(ObjectTreeItem):     def GetText(self):        return self.labeltext     def GetLabelText(self):        return None     def IsExpandable(self):        return len(self.object) > 0     def keys(self):        return self.object.keys()     def GetSubList(self):        sublist = []        for key in self.keys():            try:                value = self.object[key]            except KeyError:                continue            def setfunction(value, key=key, object=self.object):                object[key] = value            item = make_objecttreeitem(key + " =", value, setfunction)            sublist.append(item)        return sublist  def _test():    try:        import testcode        reload(testcode)    except:        sys.last_type, sys.last_value, sys.last_traceback = sys.exc_info()    from Tkinter import Tk    root = Tk()    StackBrowser(None, top=root)    root.mainloop() if __name__ == "__main__":    _test()