// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// errors包实现了操作错误的函数。
//
//...
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// errors包实现了操...
当运行一个需要绘图的python程序，在windows上运行正常的情况下，放到linux环境上往往会出现错误:
_tkinter.TclError: no display name and no $DISPLAY environment variable 如下图所示：
