tkinter实现的文本编辑器

效果：

                                                   

# -*- 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！！