python实现一个简单的记事本_Python

使用python实现一个记事本，实现了主要的功能。
# -*- coding: utf-8 -*- # @Time    : 2020/10/13 # @Author  : aurora # @Site    : # @File    : note.py # @Version : 1.0 # @Python Version : 3.7 # @Software: PyCharm from tkinter import * from tkinter.filedialog import * from tkinter.messagebox import * from tkinter import scrolledtext import os

filename = '' def author(): # 定义作者函数 showinfo(title="作者", message="aurora") # tkinter.messagebox 模块中的showinfo()函数   展示一个小的图形用户界面（弹窗） 展示文本message信息 def power(): # 定义版权函数 showinfo(title="版权信息", message="版权归aurora所有") def edition(): showinfo(title="版本号", message="version 1.0") def new_file(*args): # 新建文件   可变长参数 global top, filename, textPad # 全局变量 top.title("未命名文件") # 界面标题由记事本改为 未命名文件 filename = None # 文件名 textPad.delete(1.0, END) #  ？？？ def open_file(*args): # 打开文件 global filename # 全局变量 文件名 filename = askopenfilename(defaultextension=".txt") # if filename == "": filename = None else: top.title("" + os.path.basename(filename)) # 系统路径文件名 textPad.delete(1.0, END) f = open(filename, 'r', encoding="utf-8") # 打开文件 新建文件对象f  利用open函数 指定文件名 操作模式r（默认） 写入  编码方式 utf—8 textPad.insert(1.0, f.read()) f.close() # 关闭文件对象 def click_open(event): # 点击打开 global filename
    top.title("" + os.path.basename(filename)) # 调用系统的方法 textPad.delete(1.0, END) f = open(filename, 'r', encoding="utf-8") textPad.insert(1.0, f.read()) # 读入 f.close() def save(*args): # 保存 global filename try: f = open(filename, 'w', encoding="utf-8") msg = textPad.get(1.0, 'end') f.write(msg) f.close() except: save_as() # 如果不能保存，就执行另存为的函数save_as def save_as(*args): # 另存为 global filename
    f = asksaveasfilename(initialfile="未命名.txt", defaultextension=".txt") filename = f
    fh = open(f, 'w', encoding="utf-8") msg = textPad.get(1.0, END) fh.write(msg) fh.close() top.title("" + os.path.basename(f)) def rename(newname): # 系统重命名函数 global filename
    name = os.path.basename(os.path.splitext(filename)[0]) oldpath = filename
    newpath = os.path.dirname(oldpath) + '/' + newname + '.txt' os.rename(oldpath, newpath) filename = newpath
    refresh() # 调用刷新函数 def rename_file(*args): # 重命名 global filename
    t = Toplevel() t.geometry("260x80+200+250") t.title('重命名') frame = Frame(t) frame.pack(fill=X) lable = Label(frame, text="文件名") lable.pack(side=LEFT, padx=5) var = StringVar() e1 = Entry(frame, textvariable=var) e1.pack(expand=YES, fill=X, side=RIGHT) botton = Button(t, text="确定", command=lambda: rename(var.get())) botton.pack(side=BOTTOM, pady=10) def delete(*args): # 删除 global filename, top
    choice = askokcancel('提示', '要执行此操作吗') if choice: if os.path.exists(filename): os.remove(filename) textPad.delete(1.0, END) top.title("记事本") filename = '' def cut(): # 剪切函数 global textPad
    textPad.event_generate("<<Cut>>") def copy(): # 复制函数 global textPad
    textPad.event_generate("<<Copy>>") def paste(): # 粘贴函数 global textPad
    textPad.event_generate("<<Paste>>") def undo(): # 撤销 global textPad
    textPad.event_generate("<<Undo>>") def redo(): # 重做 global textPad
    textPad.event_generate("<<Redo>>") def select_all(): # 全选 global textPad
    textPad.tag_add("sel", "1.0", "end") def find(*agrs): # 查找栏上面的查找界面 global textPad
    t = Toplevel(top) t.title("查找") t.geometry("260x60+200+250") # 图形用户界面的大小 t.transient(top) Label(t, text="查找：").grid(row=0, column=0, sticky="e") v = StringVar() e = Entry(t, width=20, textvariable=v) e.grid(row=0, column=1, padx=2, pady=2, sticky="we") e.focus_set() c = IntVar() Checkbutton(t, text="不区分大小写", variable=c).grid(row=1, column=1, sticky='e') Button(t, text="查找所有", command=lambda: search(v.get(), c.get(), textPad, t, e)).grid\ (row=0, column=2, sticky="e" + "w", padx=2, pady=2) # 图形界面中的按钮 def close_search(): # 函数内部定义函数 关闭查找 textPad.tag_remove("match", "1.0", END) t.destroy() t.protocol("WM_DELETE_WINDOW", close_search) def mypopup(event): # 弹出菜单 global editmenu
    editmenu.tk_popup(event.x_root, event.y_root) def search(needle, cssnstv, textPad, t, e): # 文章内部进行查找 匹配的函数 textPad.tag_remove("match", "1.0", END) count = 0 if needle: start = 1.0 while True: pos = textPad.search(needle, start, nocase=cssnstv, stopindex=END) if not pos: break strlist = pos.split('.') # 分割字符串 left = strlist[0] right = str(int(strlist[1]) + len(needle)) lastpos = left + '.' + right
            textPad.tag_add("match", pos, lastpos) count += 1 start = lastpos
            textPad.tag_config('match', background="yellow") # 查找到的元素变为高亮的黄色  突出显示 e.focus_set() t.title(str(count) + "个被匹配") # def refresh(): # 刷新函数 global top, filename if filename: top.title(os.path.basename(filename)) else: top.title("记事本") top = Tk() # 新建图形用户界面（主界面） top.title("记事本") # 顶层标题 top.geometry("640x480+500+200") # 界面大小 menubar = Menu(top) # 文件功能 # Menu类控件用来实现顶层/下拉/弹出菜单 filemenu = Menu(top) # 创建一个顶级菜单 # 通过add_command函数添加一个下拉的子菜单 filemenu.add_command(label="新建", accelerator="Ctrl+N", command=new_file) # 创建一个下拉菜单“新建”，然后将它添加到顶级菜单中 command绑定点击后调用的函数 filemenu.add_command(label="打开", accelerator="Ctrl+O", command=open_file) filemenu.add_command(label="保存", accelerator="Ctrl+S", command=save) filemenu.add_command(label="另存为", accelerator="Ctrl+shift+s", command=save_as) filemenu.add_command(label="重命名", accelerator="Ctrl+R", command=rename_file) filemenu.add_command(label="删除", accelerator="Ctrl+D", command=delete) menubar.add_cascade(label="文件(F)", menu=filemenu) # 文件 # 编辑功能 editmenu = Menu(top) 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() # 分割线 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=find) editmenu.add_command(label="全选", accelerator="Ctrl+A", command=select_all) menubar.add_cascade(label="编辑(E)", menu=editmenu) # 编辑 # 关于 功能 aboutmenu = Menu(top) aboutmenu.add_command(label="作者", command=author) aboutmenu.add_command(label="版权", command=power) aboutmenu.add_command(label="版本", command=edition) # menubar.add_cascade(label="关于(A)", menu=aboutmenu) # 关于 top['menu'] = menubar

shortcutbar = Frame(top, height=25, bg='Silver') shortcutbar.pack(expand=NO, fill=X) textPad = Text(top, 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) # 热键绑定  考虑大小写 textPad.bind("<Control-N>", new_file) textPad.bind("<Control-n>", new_file) textPad.bind("<Control-O>", open_file) textPad.bind("<Control-o>", open_file) textPad.bind("<Control-S>", save) textPad.bind("<Control-s>", save) textPad.bind("<Control-D>", delete) textPad.bind("<Control-d>", delete) textPad.bind("<Control-R>", rename_file) textPad.bind("<Control-r>", rename_file) textPad.bind("<Control-A>", select_all) textPad.bind("<Control-a>", select_all) textPad.bind("<Control-F>", find) textPad.bind("<Control-f>", find) textPad.bind("<Button-3>", mypopup) # top.mainloop() # 进入主循环