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Quick and dirty Python script to Base64 decode a text file with GUI




This Python script allows a user to decode a Base64 string that is saved in a text file. This script utilizes TKinter, the premier choice for Graphical User Interface (GUI), to select a file, then decode the contents of the file into the console. This script is compatible with Windows, MacOS, and Linux hosts.


Code segment:


## PyBase64DecodeGUI: Written by Andrew Akers (andrew@techmasteracademy.com)##

import os.path

from os import system

import tkinter as tk

from tkinter import filedialog

import base64


def file_prompt(): ## File Prompt

print("Please select the file that you would like to Base64 decode.\n\n")


#Clear Screen


if os.name == 'posix':

os.system('clear')


if os.name =='nt':

os.system('cls')


file_prompt()

root = tk.Tk()

root.withdraw()

file_path_name = filedialog.askopenfilename()


try:

encodedStr = open(file_path_name, encoding='utf8').read()

except:

print ("Error: Could not find file or read data.\n\n")

quit()

else:

print ("File opened successfully.\n\n")

print("File Path: " + file_path_name + "\n\n")


print ("Base64 Encoded text: " + encodedStr + "\n\n")


# Url Safe Base64 Decoding

decodedBytes = base64.urlsafe_b64decode(encodedStr)

decodedStr = str(decodedBytes, "utf-8")


print("Base64 Decoded text: " + decodedStr + "\n\n")

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