Changelog 12

import tkinter as tk

_root = frame1

with open("T:/TechOS/Virtual/Info/Version.info", "r") as f:
    version = f.read()
changes = {}

with open("T:/TechOS/Virtual/Info/Changelog.txt", "r") as f:
    changelog = f.read()
    for line in changelog.splitlines():
        changeid = line.split(":", 1)[0]
        update = changeid.split(".", 1)[0]
        number = int(changeid.split(".", 1)[1])
        change = line.split(":", 1)[1]
        if number == 0:
            changes[update] = []
        else:
            pass
        changes[update].append(change)

title = tk.Label(_root, bg='white', fg='#00afff', text="What's New in TechOS", font='TkDefaultFont 20')
title.pack(side='top', anchor='nw', padx=5, pady=5)

header = tk.Label(_root, bg='white', text="Version", font='TkDefaultFont 15')
header.pack(side='top', anchor='nw', padx=5, pady=5)

content = tk.Label(_root, bg='white', justify='left', padx=10, pady=10, wraplength=500)
content.pack(side='top', anchor='nw')

def loadversion(vs):
    global changes, header, content
    header.config(text=f"Version {vs}")
    conts = ""
    for i in changes[vs]:
        conts += "- " + i + "\n\n"
    content.config(text=conts)

def prev():
    global version, changes, loadversion
    preversion = str(int(version) - 1)
    try:
        if changes[preversion]:
            version = preversion
            loadversion(version)
        else:
            pass
    except KeyError:
        pass

def nxt():
    global version, changes, loadversion
    nxtversion = str(int(version) + 1)
    try:
        if changes[nxtversion]:
            version = nxtversion
            loadversion(version)
        else:
            pass
    except KeyError:
        pass

previous = tk.Button(_root, bg='white', bd=0, activebackground='lightgray', text='< Previous Version', padx=5, pady=5, command=prev)
previous.pack(side='left', anchor='sw')

next = tk.Button(_root, bg='white', bd=0, activebackground='lightgray', text='Next Version >', padx=5, pady=5, command=nxt)
next.pack(side='right', anchor='se')

loadversion(version)