【转】tkinter实现的文本编辑器

此代码是看完如下教学视频实现的，所以算是【转载】吧：

效果：

                                                   

代码：

 # -*- encoding: utf8 -*-
 #python 2.7
 from Tkinter import *
 from tkMessageBox import *
 from tkFileDialog import *
 import os

 filename = ''

 def author():
     showinfo('author:','sundy')

 def about():
     showinfo('Copyright:','sundy')

 def openfile():
     global filename
     filename = askopenfilename(defaultextension = '.txt')
     if filename == '':
         filename = None
     else:
         root.title('FileName:'+os.path.basename(filename))
         textPad.delete(1.0,END)
         f = open(filename,'r')
         textPad.insert(1.0,f.read())
         f.close()

 def new():
     global filename
     root.title('未命名文件')
     filename = None
     textPad.delete(1.0,END)

 def save():
     global filename
     try:
         f = open(filename,'w')
         msg = textPad.get(1.0,END)
         f.write(msg)
         f.close()
     except:
         saveas()

 def saveas():
     f = asksaveasfilename(initialfile= '未命名.txt', defaultextension='.txt')
     global filename
     filename = f
     fh = open(f,'w')
     msg = textPad.get(1.0,END)
     fh.write(msg)
     fh.close()
     root.title('FileName:'+os.path.basename(f))

 def cut():
     textPad.event_generate('<<Cut>>')

 def copy():
     textPad.event_generate('<<Copy>>')

 def paste():
     textPad.event_generate('<<Paste>>')

 def redo():
     textPad.event_generate('<<Redo>>')

 def undo():
     textPad.event_generate('<<Undo>>')

 def selectAll():
     textPad.tag_add('sel','1.0',END)

 def search():
     def dosearch():
         myentry = entry1.get()             #获取查找的内容--string型
         whatever = str(textPad.get(1.0,END))
         # print textPad.index('zxc')
         # print myentry
         # print "%d个"%(whatever.count(myentry))    #计算substr在S中出现的次数
         showinfo("查找结果：","you searched %s, there are %d in the text"%(myentry,whatever.count(myentry)))
         # print whatever.find(myentry)

         # teIndex = textPad.index(myentry)
         # textPad.linestart(teIndex)
         # textPad.mark_set('insert', teIndex)
         # textPad.mark_set(myentry,CURRENT + '+5c')
         # textPad.mark_set(myentry,CURRENT + ' wordstart')
     topsearch = Toplevel(root)
     topsearch.geometry('300x30+200+250')
     label1 = Label(topsearch,text='Find')
     label1.grid(row=0, column=0,padx=5)
     entry1 = Entry(topsearch,width=20)
     entry1.grid(row=0, column=1,padx=5)
     button1 = Button(topsearch,text='查找',command=dosearch)
     button1.grid(row=0, column=2)

 root = Tk()
 root.title('Sundy Node')
 root.geometry("800x500+100+100")

 #Create Menu
 menubar = Menu(root)
 root.config(menu = menubar)

 filemenu = Menu(menubar)
 filemenu.add_command(label='新建', accelerator='Ctrl + N', command= new)
 filemenu.add_command(label='打开', accelerator='Ctrl + O',command = openfile)
 filemenu.add_command(label='保存', accelerator='Ctrl + S', command=save)
 filemenu.add_command(label='另存为', accelerator='Ctrl + Shift + S',command=saveas)
 menubar.add_cascade(label='文件',menu=filemenu)

 editmenu = Menu(menubar)
 editmenu.add_command(label='撤销', accelerator='Ctrl + Z', command=undo)
 editmenu.add_command(label='重做', accelerator='Ctrl + y', command=redo)
 editmenu.add_separator()
 editmenu.add_command(label = "剪切",accelerator = "Ctrl + X",command=cut)
 editmenu.add_command(label = "复制",accelerator = "Ctrl + C", command=copy)
 editmenu.add_command(label = "粘贴",accelerator = "Ctrl + V", command= paste)
 editmenu.add_separator()
 editmenu.add_command(label = "查找",accelerator = "Ctrl + F", command=search)
 editmenu.add_command(label = "全选",accelerator = "Ctrl + A", command= selectAll)
 menubar.add_cascade(label = "操作",menu = editmenu)
 aboutmenu = Menu(menubar)
 aboutmenu.add_command(label = "作者", command=author)
 aboutmenu.add_command(label = "关于", command = about)
 menubar.add_cascade(label = "about",menu=aboutmenu)

 #toolbar
 toolbar = Frame(root, height=25,bg='grey')
 shortButton = Button(toolbar, text='打开',command = openfile)
 shortButton.pack(side=LEFT, padx=5, pady=5)

 shortButton = Button(toolbar, text='保存', command = save)
 shortButton.pack(side=LEFT)
 toolbar.pack(expand=NO,fill=X)

 #Status Bar
 status = Label(root, text='Ln20',bd=1, relief=SUNKEN,anchor=W)
 status.pack(side=BOTTOM, fill=X)

 #linenumber&text
 lnlabel =Label(root, width=2, bg='antique white')
 lnlabel.pack(side=LEFT, fill=Y)

 textPad = Text(root, undo=True)
 textPad.pack(expand=YES, fill=BOTH)

 scroll = Scrollbar(textPad)
 textPad.config(yscrollcommand= scroll.set)
 scroll.config(command = textPad.yview)
 scroll.pack(side=RIGHT,fill=Y)

 root.mainloop()

推荐文档：http://effbot.org/tkinterbook/

*python2.7环境。。在python3.X中tkinter有改变，请注意！！