python仿微软记事本

# -*- coding=utf-8 -*-
from tkinter import filedialog
import tkinter as tk
import tkinter.scrolledtext as tkst
from tkinter import messagebox
import fileinput
from tkinter import *
import os
import time

t1 = []
root = None

def die():
    root.destroy()

def about():
    messagebox.showinfo(title = "当前版本为1.0,欢迎使用",message = "**作者:韩东\n**状态:继续努力ing")
class editor:
    def __init__(self,rt):
        if rt == None:
            self.t = tk.Tk()
        else:
            self.t = tk.Toplevel(rt)
        self.t.title("文本编辑器%d" % (len(t1)+1))
        self.bar = tk.Menu(rt)

        self.filem = tk.Menu(self.bar)
        self.filem.add_separator()
        self.filem.add_command(label = "新建",command = self.neweditor)
        self.filem.add_separator()
        self.filem.add_command(label = "打开",command = self.openfile)
        self.filem.add_separator()
        self.filem.add_command(label = "保存",command = self.savefile)
        self.filem.add_separator()
        self.filem.add_command(label = "关闭",command = self.close)
        self.filem.add_separator()
        self.filem.add_command(label = "退出",command = die)

        self.editm = tk.Menu(self.bar)
        self.editm.add_separator()
        self.editm.add_command(label = "复制",command = self.copy)
        self.editm.add_separator()
        self.editm.add_command(label = "黏贴",command = self.paste)
        self.editm.add_separator()
        self.editm.add_command(label = "剪切",command = self.cut)
        self.editm.add_separator()
        self.editm.add_command(label = "删除",command = self.delete_text)
        self.editm.add_separator()
        self.editm.add_command(label = "查找",command = self.find_char)
        self.editm.add_separator()
        self.editm.add_command(label = "全选",command = self.select_char_all)

        self.helpm = tk.Menu(self.bar)
        self.helpm.add_command(label = "关于",command = about)
        self.bar.add_cascade(label = "文件",menu = self.filem)
        self.bar.add_cascade(label = "编辑",menu = self.editm)
        self.bar.add_cascade(label = "帮助",menu = self.helpm)

        self.t.config(menu = self.bar)

        self.f = tk.Frame(self.t,width = 512)
        self.f.pack(expand =1)

        self.st = tkst.ScrolledText(self.t)
        self.st.pack(expand = 1)

    def close(self):
        self.t.destroy()
    def openfile(self):
        oname = filedialog.askopenfilename(filetypes = [("打开文件","*.txt")])
        if oname:
            for line in fileinput.input(oname):
                self.st.insert("1.0",line)
            self.t.title(oname)

    def savefile(self):
        sname = filedialog.asksaveasfilename(title = "保存好你的宝宝哟",filetypes = [("保存文件","*.txt")])
        if sname:
            ofp = open(sname,"a")
            ofp.write(self.st.get(1.0,tk.END))
            ofp.flush()
            ofp.close()
            self.t.title(sname)

    def neweditor(self):
        global root
        t1.append(editor(root))
    def copy(self):
        text = self.st.get(tk.SEL_FIRST,tk.SEL_LAST)
        self.st.clipboard_clear()
        self.st.clipboard_append(text)
    def paste(self):
        try:
            text = self.st.selection_get(selection = "CLIPBOARD")
            self.st.insert(tk.INSERT,text)
        except tk.TclError:
            pass

    def cut(self):
        text = self.st.get(tk.SEL_FIRST,tk.SEL_LAST)
        self.st.delete(tk.SEL_FIRST,tk.SEL_LAST)
        self.st.clipboard_clear()
        self.st.clipboard_append(text)

    def delete_text(self):
        self.st.delete(tk.SEL_FIRST,tk.SEL_LAST)

    def find_char(self):
        target = simpledialog.askstring("简易文本编辑器","寻找字符串")
        if target:
            end = self.st.index(tk.END)
            endindex = end.split(".")
            end_line = int(endindex[0])
            end_column = int(endindex[1])
            pos_line =1
            pos_column=0
            length =len(target)
            while pos_line <= end_line :
                if pos_line == end_line and pos_column +length > end_column:
                    break
                elif pos_line < end_line and pos_column + length >100:
                   pos_line = pos_line + 1
                   pos_column = 100 - (pos_column + length)
                   if pos_column > end_column:
                        break
                else:
                    pos = str(pos_line)+"."+str(pos_column)
                    where = self.st.search(target,pos,tk.END)
                    if  where:
                        print(where)
                        where1 =where.split(".")
                        sele_end_col = str(int(where1[1])+length)
                        sele = where1[0] + "."+ sele_end_col
                        self.st.tag_add(tk.SEL,where,sele)
                        self.st.mark_set(tk.INSERT,sele)
                        self.st.see(tk.INSERT)
                        #self.st.focus()

                        again = messagebox.askokcancel(title = "继续查询么")
                        if again:
                            pos_line = int(where1[0])
                            pos_column = int(sele_end_col)
                        else:
                            aa=messagebox.showinfo(title = "你终于还是放弃了我",message = "你放弃了我--!")
                            if aa:
                                sys.exit()

    def select_char_all(self):
        self.st.tag_add(tk.SEL,1.0,tk.END)
        self.st.see(tk.INSERT)
        self.st.focus()
if __name__ == "__main__":
    root = None
    t1.append(editor(root))
    root = t1[0].t
    root.mainloop()

效果：