文本编辑器。学习五天Python,新手第一次发.，,#!/usr/bin/e

文本编辑器。学习五天Python,新手第一次发.，,#!/usr/bin/e

#!/usr/bin/env python#-*- coding: utf-8 -*-from Tkinter import *import tkMessageBox,tkFileDialogimport platform# nl = os.linesepdef openfile():    global filename             # 使用global声明为全局变量，方便后边的程序调用    systype = platform.system() # 判断系统类型    if systype == 'windows':        basedir = 'c:\\\\'    else:        basedir = '/'    filename = tkFileDialog.askopenfilename(initialdir=basedir)    try:        fobj_r = open(filename, 'r')    except IOError, errmsg:        print '*** Failed open file:', errmsg    else:        editbox.delete(1.0, END)        for eachline in fobj_r:            editbox.insert(INSERT, eachline)        fobj_r.close()def savefile():    save_data = editbox.get(1.0, END)    try:        fobj_w = open(filename, 'w')        fobj_w.writelines(save_data.encode('utf-8')) # 感谢OSC-骠骑将军 指教        fobj_w.close()        tkMessageBox.showinfo(title='提示',                message='保存成功')    except IOError, errmsg:        tkMessageBox.showwarning(title='保存失败', message='保存出错    ')        tkMessageBox.showwarning(title='错误信息', message=errmsg)    except NameError:        tkMessageBox.showwarning(title='保存失败', message='未打开文件')def showlinenum():    tkMessageBox.showinfo(title='提示',            message='这个功能作者现在不会写,放这里装饰用的.')def destroy_ui(ui):    ui.destroy()def aboutauthor():    author_ui = Toplevel()    author_ui.title('关于')    author_ui.geometry('200x80')    about_string = Label(author_ui,            text="作者: ToughGuy\\n\\n主页: http://www.techzhai.net/")    confirmbtn = Button(author_ui, text='确定',            command=lambda:destroy_ui(author_ui))    about_string.pack()    confirmbtn.pack()    # author_ui.mainloop()def CreateMenus():    # 初始化菜单    Menubar = Menu(root)    # 创建文件菜单    filemenu = Menu(Menubar, tearoff=0)    filemenu.add_command(label='打开文件', command=openfile)    filemenu.add_command(label='保存文件', command=savefile)    filemenu.add_command(label='退出', command=lambda:destroy_ui(root))    Menubar.add_cascade(label='文件', menu=filemenu)    # 创建编辑菜单    editmenu = Menu(Menubar, tearoff=0)    editmenu.add_command(label='显示行号', command=showlinenum)    Menubar.add_cascade(label='编辑', menu=editmenu)    # 创建帮助菜单    helpmenu = Menu(Menubar, tearoff=0)    helpmenu.add_command(label='关于作者', command=aboutauthor)    Menubar.add_cascade(label='帮助', menu=helpmenu)    root.config(menu=Menubar)root = Tk()root.title('文本编辑器')root.geometry('500x400')CreateMenus()editbox = Text(root, width=70, height=25, bg='white')editbox.pack(side=TOP, fill=X)root.mainloop()#该片段来自于http://byrx.net