現在為了創建這個記事本，你的系統中應該已經安裝了 Python 3 和 Tkinter。您可以根據系統要求下載合適的python 包。成功安裝 python 后，您需要安裝 Tkinter（一個 Python 的 GUI 包）。

使用此命令安裝 Tkinter ：

pip install python-tk

導入 Tkinter ：

import tkinterimport osfrom tkinter import *from tkinter.messagebox import *from tkinter.filedialog import *

注意： messagebox用于在稱為記事本的白框中寫入消息，filedialog用于在您從系統中的任何位置打開文件或將文件保存在特定位置或位置時出現的對話框。

添加菜單：

# Add controls(widget) self.__thisTextArea.grid(sticky = N + E + S + W) # To open new file self.__thisFileMenu.add_command(label = 'New', command = self.__newFile) # To open a already existing file self.__thisFileMenu.add_command(label = 'Open', command = self.__openFile) # To save current file self.__thisFileMenu.add_command(label = 'Save', command = self.__saveFile) # To create a line in the dialog self.__thisFileMenu.add_separator() # To terminate self.__thisFileMenu.add_command(label = 'Exit', command = self.__quitApplication) self.__thisMenuBar.add_cascade(label = 'File',menu = self.__thisFileMenu) # To give a feature of cut self.__thisEditMenu.add_command(label = 'Cut', command = self.__cut) # To give a feature of copy self.__thisEditMenu.add_command(label = 'Copy', command = self.__copy) # To give a feature of paste self.__thisEditMenu.add_command(label = 'Paste', command = self.__paste) # To give a feature of editing self.__thisMenuBar.add_cascade(label = 'Edit',menu = self.__thisEditMenu) # To create a feature of description of the notepad self.__thisHelpMenu.add_command(label = 'About Notepad', command = self.__showAbout) self.__thisMenuBar.add_cascade(label = 'Help',menu = self.__thisHelpMenu) self.__root.config(menu = self.__thisMenuBar) self.__thisScrollBar.pack(side = RIGHT, fill = Y) # Scrollbar will adjust automatically # according to the content self.__thisScrollBar.config(command = self.__thisTextArea.yview) self.__thisTextArea.config(yscrollcommand = self.__thisScrollBar.set)

使用此代碼，我們將在記事本的窗口中添加菜單，并向其中添加復制、粘貼、保存等內容。

添加功能：

def __quitApplication(self): self.__root.destroy() # exit() def __showAbout(self): showinfo('Notepad', 'Mrinal Verma') def __openFile(self): self.__file = askopenfilename(defaultextension='.txt', filetypes=[('All Files','*.*'), ('Text Documents','*.txt')]) if self.__file == '': # no file to open self.__file = None else: # try to open the file # set the window title self.__root.title(os.path.basename(self.__file) + ' - Notepad') self.__thisTextArea.delete(1.0,END) file = open(self.__file,'r') self.__thisTextArea.insert(1.0,file.read()) file.close() def __newFile(self): self.__root.title('Untitled - Notepad') self.__file = None self.__thisTextArea.delete(1.0,END) def __saveFile(self): if self.__file == None: #save as new file self.__file = asksaveasfilename(initialfile=’Untitled.txt’, defaultextension='.txt', filetypes=[('All Files','*.*'), ('Text Documents','*.txt')]) if self.__file == '': self.__file = Noneelse: # try to save the file file = open(self.__file,'w') file.write(self.__thisTextArea.get(1.0,END)) file.close() # change the window title self.__root.title(os.path.basename(self.__file) + ' - Notepad') else: file = open(self.__file,'w') file.write(self.__thisTextArea.get(1.0,END)) file.close() def __cut(self): self.__thisTextArea.event_generate('<<Cut>>') def __copy(self): self.__thisTextArea.event_generate('<<Copy>>') def __paste(self): self.__thisTextArea.event_generate('<<Paste>>')

在這里，我們添加了記事本中所需的所有功能，您也可以添加其他功能，例如字體大小、字體顏色、粗體、下劃線等。

合并后的主要代碼：

import tkinterimport osfrom tkinter import *from tkinter.messagebox import *from tkinter.filedialog import * class Notepad: __root = Tk() # default window width and height __thisWidth = 300 __thisHeight = 300 __thisTextArea = Text(__root) __thisMenuBar = Menu(__root) __thisFileMenu = Menu(__thisMenuBar, tearoff=0) __thisEditMenu = Menu(__thisMenuBar, tearoff=0) __thisHelpMenu = Menu(__thisMenuBar, tearoff=0) # To add scrollbar __thisScrollBar = Scrollbar(__thisTextArea) __file = None def __init__(self, **kwargs): # Set icontry: self.__root.wm_iconbitmap('Notepad.ico')except: pass # Set window size (the default is 300x300) try: self.__thisWidth = kwargs[’width’]except KeyError: pass try: self.__thisHeight = kwargs[’height’]except KeyError: pass # Set the window textself.__root.title('Untitled - Notepad') # Center the windowscreenWidth = self.__root.winfo_screenwidth()screenHeight = self.__root.winfo_screenheight() # For left-allingleft = (screenWidth / 2) - (self.__thisWidth / 2) # For right-alligntop = (screenHeight / 2) - (self.__thisHeight / 2) # For top and bottomself.__root.geometry(’%dx%d+%d+%d’ % (self.__thisWidth, self.__thisHeight, left, top)) # To make the textarea auto resizableself.__root.grid_rowconfigure(0, weight=1)self.__root.grid_columnconfigure(0, weight=1) # Add controls (widget)self.__thisTextArea.grid(sticky=N + E + S + W) # To open new fileself.__thisFileMenu.add_command(label='New',command=self.__newFile) # To open a already existing fileself.__thisFileMenu.add_command(label='Open',command=self.__openFile) # To save current fileself.__thisFileMenu.add_command(label='Save',command=self.__saveFile) # To create a line in the dialogself.__thisFileMenu.add_separator()self.__thisFileMenu.add_command(label='Exit',command=self.__quitApplication)self.__thisMenuBar.add_cascade(label='File', menu=self.__thisFileMenu) # To give a feature of cutself.__thisEditMenu.add_command(label='Cut',command=self.__cut) # to give a feature of copyself.__thisEditMenu.add_command(label='Copy',command=self.__copy) # To give a feature of pasteself.__thisEditMenu.add_command(label='Paste',command=self.__paste) # To give a feature of editingself.__thisMenuBar.add_cascade(label='Edit', menu=self.__thisEditMenu) # To create a feature of description of the notepadself.__thisHelpMenu.add_command(label='About Notepad',command=self.__showAbout)self.__thisMenuBar.add_cascade(label='Help', menu=self.__thisHelpMenu) self.__root.config(menu=self.__thisMenuBar) self.__thisScrollBar.pack(side=RIGHT, fill=Y) # Scrollbar will adjust automatically according to the contentself.__thisScrollBar.config(command=self.__thisTextArea.yview)self.__thisTextArea.config(yscrollcommand=self.__thisScrollBar.set) def __quitApplication(self):self.__root.destroy()# exit() def __showAbout(self):showinfo('Notepad', 'Mrinal Verma') def __openFile(self): self.__file = askopenfilename(defaultextension='.txt', filetypes=[('All Files', '*.*'), ('Text Documents', '*.txt')]) if self.__file == '': # no file to open self.__file = Noneelse: # Try to open the file # set the window title self.__root.title(os.path.basename(self.__file) + ' - Notepad') self.__thisTextArea.delete(1.0, END) file = open(self.__file, 'r') self.__thisTextArea.insert(1.0, file.read()) file.close() def __newFile(self):self.__root.title('Untitled - Notepad')self.__file = Noneself.__thisTextArea.delete(1.0, END) def __saveFile(self): if self.__file == None: # Save as new file self.__file = asksaveasfilename(initialfile=’Untitled.txt’, defaultextension='.txt', filetypes=[('All Files', '*.*'), ('Text Documents', '*.txt')]) if self.__file == '':self.__file = None else: # Try to save the filefile = open(self.__file, 'w')file.write(self.__thisTextArea.get(1.0, END))file.close() # Change the window titleself.__root.title(os.path.basename(self.__file) + ' - Notepad') else: file = open(self.__file, 'w') file.write(self.__thisTextArea.get(1.0, END)) file.close() def __cut(self):self.__thisTextArea.event_generate('<<Cut>>') def __copy(self):self.__thisTextArea.event_generate('<<Copy>>') def __paste(self):self.__thisTextArea.event_generate('<<Paste>>') def run(self): # Run main applicationself.__root.mainloop() # Run main application notepad = Notepad(width=600, height=400)notepad.run()

要運行此代碼，請使用擴展名.py保存它，然后打開 cmd（命令提示符）并移動到保存文件的位置，然后編寫以下內容

python 'filename'.py

然后按回車，它就會運行。或者可以通過簡單地雙擊您的.py擴展文件直接運行。

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