File Dialog Boxes – Object Oriented Tkinter 3

In this video we’ll learn how to create File Dialog Boxes using Object Oriented Programming in Tkinter and Python.

File Dialog boxes allow us to select files to open in our Tkinter app.

We’ll build an app that opens a text file, reads the file, and renders the text onto a Text Widget.

Python Code: class_filedialog.py
(Github Code)

from tkinter import *
from tkinter import filedialog

class App(Tk):
	def __init__(self):
		super().__init__()

		# Title, icon, size
		self.title("Tkinter.com - OOP File Dialog")
		self.iconbitmap('images/codemy.ico')
		self.geometry('700x450')

		# Create Widgets
		self.my_text = Text(self, width=80, height=20)
		self.my_text.pack(pady=20)

		self.my_button = Button(self, text="Open File", command=self.file)
		self.my_button.pack(pady=20)



	# Create Popup Function
	def file(self):
		self.my_file = filedialog.askopenfilename(initialdir="", 
			title="Select a File",
			filetypes=(("txt files", "*.txt"), ("All Files", "*.*")))
		
		# Check to make sure user selected a file
		if self.my_file:
			# Open and read the file
			get_contents = open(self.my_file, "r")
			self.my_text.insert(END, get_contents.read())


# Define and instantiate our app
app = App()
app.mainloop()