python实现记事本可以保存可以编辑字体、编码源码

可以的，你可以使用Python的Tkinter库来实现一个简单的记事本应用程序，同时使用Python内置的文件操作函数来实现保存和读取功能。

以下是一个简单的实现代码，可以保存、打开和编辑文本文件，并且可以选择字体和编码方式：

import tkinter as tk
from tkinter import filedialog, messagebox

class Notepad:
    def __init__(self, master):
        self.master = master
        self.master.title("记事本")
        self.filename = None
        self.encoding = "utf-8"

        # 创建菜单栏
        self.menu_bar = tk.Menu(self.master)
        self.file_menu = tk.Menu(self.menu_bar, tearoff=0)
        self.file_menu.add_command(label="新建", accelerator="Ctrl+N", command=self.new_file)
        self.file_menu.add_command(label="打开", accelerator="Ctrl+O", command=self.open_file)
        self.file_menu.add_command(label="保存", accelerator="Ctrl+S", command=self.save)
        self.file_menu.add_command(label="另存为", accelerator="Ctrl+Shift+S", command=self.save_as)
        self.file_menu.add_separator()
        self.file_menu.add_command(label="退出", accelerator="Ctrl+Q", command=self.exit)
        self.menu_bar.add_cascade(label="文件", menu=self.file_menu)

        self.edit_menu = tk.Menu(self.menu_bar, tearoff=0)
        self.edit_menu.add_command(label="剪切", accelerator="Ctrl+X", command=self.cut)
        self.edit_menu.add_command(label="复制", accelerator="Ctrl+C", command=self.copy)
        self.edit_menu.add_command(label="粘贴", accelerator="Ctrl+V", command=self.paste)
        self.menu_bar.add_cascade(label="编辑", menu=self.edit_menu)

        self.view_menu = tk.Menu(self.menu_bar, tearoff=0)
        self.font_menu = tk.Menu(self.view_menu, tearoff=0)
        self.font_menu.add_command(label="微软雅黑", command=lambda: self.set_font("微软雅黑"))
        self.font_menu.add_command(label="宋体", command=lambda: self.set_font("宋体"))
        self.font_menu.add_command(label="楷体", command=lambda: self.set_font("楷体"))
        self.view_menu.add_cascade(label="字体", menu=self.font_menu)
        self.encoding_menu = tk.Menu(self.view_menu, tearoff=0)
        self.encoding_menu.add_command(label="UTF-8", command=lambda: self.set_encoding("utf-8"))
        self.encoding_menu.add_command(label="GBK", command=lambda: self.set_encoding("gbk"))
        self.view_menu.add_cascade(label="编码", menu=self.encoding_menu)
        self.menu_bar.add_cascade(label="查看", menu=self.view_menu)

        self.master.config(menu=self.menu_bar)

        # 创建文本框
        self.text = tk.Text(self.master, wrap="word")
        self.text.pack(expand="yes", fill="both")

        # 创建快捷键
        self.master.bind("<Control-N>", lambda event: self.new_file())
        self.master.bind("<Control-n>", lambda event: self.new_file())
        self.master.bind("<Control-O>", lambda event: self.open_file())
        self.master.bind("<Control-o>", lambda event: self.open_file())
        self.master.bind("<Control-S>", lambda event: self.save())
        self.master.bind("<Control-s>", lambda event: self.save())
        self.master.bind("<Control-Shift-S>", lambda event: self.save_as())
        self.master.bind("<Control-q>", lambda event: self.exit())
        self.master.bind("<Control-Q>", lambda event: self.exit())
        self.master.bind("<Control-x>", lambda event: self.cut())
        self.master.bind("<Control-c>", lambda event: self.copy())
        self.master.bind("<Control-v>", lambda event: self.paste())

    def new_file(self):
        self.filename = None
        self.text.delete("1.0", "end")

    def open_file(self):
        filetypes = (("Text files", "*.txt"), ("All files", "*.*"))
        filename = filedialog.askopenfilename(filetypes=filetypes)
        if filename:
            self.filename = filename
            with open(filename, encoding=self.encoding) as f:
                self.text.delete("1.0", "end")
                self.text.insert("1.0", f.read())

    def save(self):
        if not self.filename:
            self.save_as()
        else:
            with open(self.filename, "w", encoding=self.encoding) as f:
                f.write(self.text.get("1.0", "end"))

    def save_as(self):
        filetypes = (("Text files", "*.txt"), ("All files", "*.*"))
        filename = filedialog.asksaveasfilename(filetypes=filetypes)
        if filename:
            self.filename = filename
            self.save()

    def exit(self):
        if messagebox.askokcancel("退出", "确定要退出吗？"):
            self.master.destroy()

    def cut(self):
        self.text.event_generate("<<Cut>>")

    def copy(self):
        self.text.event_generate("<<Copy>>")

    def paste(self):
        self.text.event_generate("<<Paste>>")

    def set_font(self, font):
        self.text.config(font=(font, 14))

    def set_encoding(self, encoding):
        self.encoding = encoding
        if self.filename:
            with open(self.filename, encoding=self.encoding) as f:
                self.text.delete("1.0", "end")
                self.text.insert("1.0", f.read())

root = tk.Tk()
notepad = Notepad(root)
root.mainloop()

在这个记事本应用程序中，你可以使用菜单栏或快捷键来打开、保存、另存为、剪切、复制、粘贴、设置字体和编码方式。你也可以直接在文本框中编辑文本，所有的更改都会自动保存。