使用python3.5仿微软记事本notepad

from tkinter import filedialogimport tkinter as tkimport tkinter.scrolledtext as tkstfrom tkinter import messageboximport fileinputfrom tkinter import *from os import *import osimport 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()