【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：
  1 # -*- encoding: utf8 -*-
  2 #python 2.7
  3 from Tkinter import *
  4 from tkMessageBox import *
  5 from tkFileDialog import *
  6 import os
  7 
  8 
  9 filename = ''
 10 
 11 def author():
 12     showinfo('author:','sundy')
 13 
 14 def about():
 15     showinfo('Copyright:','sundy')
 16 
 17 def openfile():
 18     global filename
 19     filename = askopenfilename(defaultextension = '.txt')
 20     if filename == '':
 21         filename = None
 22     else:
 23         root.title('FileName:'+os.path.basename(filename))
 24         textPad.delete(1.0,END)
 25         f = open(filename,'r')
 26         textPad.insert(1.0,f.read())
 27         f.close()
 28 
 29 def new():
 30     global filename
 31     root.title('未命名文件')
 32     filename = None
 33     textPad.delete(1.0,END)
 34 
 35 def save():
 36     global filename
 37     try:
 38         f = open(filename,'w')
 39         msg = textPad.get(1.0,END)
 40         f.write(msg)
 41         f.close()
 42     except:
 43         saveas()
 44 
 45 
 46 def saveas():
 47     f = asksaveasfilename(initialfile= '未命名.txt', defaultextension='.txt')
 48     global filename
 49     filename = f
 50     fh = open(f,'w')
 51     msg = textPad.get(1.0,END)
 52     fh.write(msg)
 53     fh.close()
 54     root.title('FileName:'+os.path.basename(f))
 55 
 56 def cut():
 57     textPad.event_generate('<<Cut>>')
 58 
 59 def copy():
 60     textPad.event_generate('<<Copy>>')
 61 
 62 def paste():
 63     textPad.event_generate('<<Paste>>')
 64 
 65 def redo():
 66     textPad.event_generate('<<Redo>>')
 67 
 68 def undo():
 69     textPad.event_generate('<<Undo>>')
 70 
 71 def selectAll():
 72     textPad.tag_add('sel','1.0',END)
 73 
 74 def search():
 75     def dosearch():
 76         myentry = entry1.get()             #获取查找的内容--string型
 77         whatever = str(textPad.get(1.0,END))
 78         # print textPad.index('zxc')
 79         # print myentry
 80         # print "%d个"%(whatever.count(myentry))    #计算substr在S中出现的次数
 81         showinfo("查找结果：","you searched %s, there are %d in the text"%(myentry,whatever.count(myentry)))
 82         # print whatever.find(myentry)
 83 
 84         # teIndex = textPad.index(myentry)
 85         # textPad.linestart(teIndex)
 86         # textPad.mark_set('insert', teIndex)
 87         # textPad.mark_set(myentry,CURRENT + '+5c')
 88         # textPad.mark_set(myentry,CURRENT + ' wordstart')
 89     topsearch = Toplevel(root)
 90     topsearch.geometry('300x30+200+250')
 91     label1 = Label(topsearch,text='Find')
 92     label1.grid(row=0, column=0,padx=5)
 93     entry1 = Entry(topsearch,width=20)
 94     entry1.grid(row=0, column=1,padx=5)
 95     button1 = Button(topsearch,text='查找',command=dosearch)
 96     button1.grid(row=0, column=2)
 97     
 98 
 99 root = Tk()
100 root.title('Sundy Node')
101 root.geometry("800x500+100+100")
102 
103 #Create Menu
104 menubar = Menu(root)
105 root.config(menu = menubar)
106 
107 filemenu = Menu(menubar)
108 filemenu.add_command(label='新建', accelerator='Ctrl + N', command= new)
109 filemenu.add_command(label='打开', accelerator='Ctrl + O',command = openfile)
110 filemenu.add_command(label='保存', accelerator='Ctrl + S', command=save)
111 filemenu.add_command(label='另存为', accelerator='Ctrl + Shift + S',command=saveas)
112 menubar.add_cascade(label='文件',menu=filemenu)
113 
114 editmenu = Menu(menubar)
115 editmenu.add_command(label='撤销', accelerator='Ctrl + Z', command=undo)
116 editmenu.add_command(label='重做', accelerator='Ctrl + y', command=redo)
117 editmenu.add_separator()
118 editmenu.add_command(label = "剪切",accelerator = "Ctrl + X",command=cut)
119 editmenu.add_command(label = "复制",accelerator = "Ctrl + C", command=copy)
120 editmenu.add_command(label = "粘贴",accelerator = "Ctrl + V", command= paste)
121 editmenu.add_separator()
122 editmenu.add_command(label = "查找",accelerator = "Ctrl + F", command=search)
123 editmenu.add_command(label = "全选",accelerator = "Ctrl + A", command= selectAll)
124 menubar.add_cascade(label = "操作",menu = editmenu)
125 aboutmenu = Menu(menubar)
126 aboutmenu.add_command(label = "作者", command=author)
127 aboutmenu.add_command(label = "关于", command = about)
128 menubar.add_cascade(label = "about",menu=aboutmenu)
129 
130 #toolbar
131 toolbar = Frame(root, height=25,bg='grey')
132 shortButton = Button(toolbar, text='打开',command = openfile)
133 shortButton.pack(side=LEFT, padx=5, pady=5)
134 
135 shortButton = Button(toolbar, text='保存', command = save)
136 shortButton.pack(side=LEFT)
137 toolbar.pack(expand=NO,fill=X)
138 
139 #Status Bar
140 status = Label(root, text='Ln20',bd=1, relief=SUNKEN,anchor=W)
141 status.pack(side=BOTTOM, fill=X)
142 
143 #linenumber&text
144 lnlabel =Label(root, width=2, bg='antique white')
145 lnlabel.pack(side=LEFT, fill=Y)
146 
147 textPad = Text(root, undo=True)
148 textPad.pack(expand=YES, fill=BOTH)
149 
150 scroll = Scrollbar(textPad)
151 textPad.config(yscrollcommand= scroll.set)
152 scroll.config(command = textPad.yview)
153 scroll.pack(side=RIGHT,fill=Y)
154 
155 root.mainloop()
View Code
推荐文档：http://effbot.org/tkinterbook/
*python2.7环境。。在python3.X中tkinter有改变，请注意！！