Creating Notepad using TkInter

In this example you will get to know about how to use

• File Open and Save Dialogs
• Create Menus
• Adding Scrollbars
• Reading and writing data files
• And some basic functions of multiline Text Controls.

I have not coded functions for the edit menu. Below is the code for the app. You can extend its functionality according to your needs.

	from tkinter import *
	from tkinter.messagebox import showinfo
	from tkinter import filedialog
	import os
	fullpath = ""
	def setWinTitle():
	filepath, filename = os.path.split(fullpath)
	docname, ext = os.path.splitext(filename)
	if docname == "":
	titleText = "NOTEPAD - Untitled"
	else:
	titleText = "NOTEPAD - " + docname
	root.title(titleText)
	def donothing():
	pass
	def newfile():
	global fullpath
	fullpath = ""
	setWinTitle()
	text.delete("1.0", END)
	def openfile():
	global fullpath
	filepath, filename = os.path.split(fullpath)
	fullpath = filedialog.askopenfilename(initialdir = filepath, title = "Open", filetypes = (("text files", "*.txt"), ("all files", "*.*")))
	if fullpath == "":
	return
	filepath, filename = os.path.split(fullpath)
	docname, ext = os.path.splitext(filename)
	setWinTitle()
	file = open(fullpath, "r")
	text.delete("1.0", END)
	text.insert(INSERT, file.read())
	file.close()
	def savefile():
	global fullpath, docname
	filepath, filename = os.path.split(fullpath)
	if filename == "":
	fullpath = filedialog.asksaveasfilename(initialdir = filepath, title = "Save", filetypes = (("text files", "*.txt"), ("all files", "*.*")))
	if fullpath == "":
	return
	filepath, filename = os.path.split(fullpath)
	docname, ext = os.path.splitext(filename)
	setWinTitle()
	if ext.lower() != ".txt":
	fullpath = fullpath + ".txt"
	file = open(fullpath, "w")
	file.write(text.get("1.0", END))
	file.close()
	def saveasfile():
	global fullpath
	filepath, filename = os.path.split(fullpath)
	fullpath = filedialog.asksaveasfilename(initialdir = filepath, title = "Save As", filetypes = (("text files", "*.txt"), ("all files", "*.*")))
	if filename == "":
	return
	filepath, filename = os.path.split(fullpath)
	docname, ext = os.path.splitext(filename)
	setWinTitle()
	if ext.lower() != ".txt":
	fullpath = fullpath + ".txt"
	file = open(fullpath, "w")
	file.write(text.get("1.0", END))
	file.close()
	def showhelp():
	showinfo("Notepad Help","You can use File/Open, File/Save, File/Save As, File/Exit, Help/Help Index, Help/About")
	def showabout():
	showinfo("About","This is a simple Notepad\nMade using TkInter\nBundled with Python distribution")
	def makeMenu():
	menubar = Menu(root)
	filemenu = Menu(menubar)
	menubar.add_cascade(label = "File", menu = filemenu)
	filemenu.add_command(label = "New", command = newfile)
	filemenu.add_command(label = "Open", command = openfile)
	filemenu.add_command(label = "Save", command = savefile)
	filemenu.add_command(label = "Save As", command = saveasfile)
	filemenu.add_separator()
	filemenu.add_command(label = "Exit", command = root.destroy)
	editmenu = Menu(menubar)
	menubar.add_cascade(label = "Edit", menu = editmenu)
	editmenu.add_command(label = "Undo", command = donothing)
	editmenu.add_separator()
	editmenu.add_command(label = "Cut", command = donothing)
	editmenu.add_command(label = "Copy", command = donothing)
	editmenu.add_command(label = "Paste", command = donothing)
	editmenu.add_command(label = "Delete", command = donothing)
	editmenu.add_command(label = "Select All", command = donothing)
	helpmenu = Menu(menubar)
	menubar.add_cascade(label = "Help", menu = helpmenu)
	helpmenu.add_command(label = "Help Index", command = showhelp)
	helpmenu.add_command(label = "About...", command = showabout)
	root.config(menu = menubar)
	root = Tk()
	setWinTitle()
	makeMenu()
	scrollbar = Scrollbar(root)
	scrollbar.pack(side = RIGHT, fill = Y)
	text = Text(root)
	text.pack()
	scrollbar.config(command = text.yview)
	root.mainloop()

view raw Notepad.py hosted with ❤ by GitHub