[Python] Fixed aspect ratio for a window on Tkinter

I need to find out how to keep a constant aspect ratio for a window on Tkinter.

I tried below code, but it only works when dragging bottom or top edges, but not for edges to the right or left. On all cases when dragging, the window is resized accordingly, but for non-ok cases when releasing, window's size returns to the size it had when I started dragging:

import tkinter as tk

class Window():
_windowAspectRatio = None
_resizing = False
def __init__(self):
self._root = tk.Tk()

self._root.bind("<Configure>", self._on_resize)
self._root.resizable(True,True)

self._root.state("zoomed")

self._root.update()#

self._windowWidth = self._root.winfo_width()
self._windowHeigth = self._root.winfo_height()
self._windowAspectRatio = self._windowWidth/self._windowHeigth

if 742/self._windowAspectRatio < 450:
minHeight = 450
minWidth = int(450 * self._windowAspectRatio)
else:
minHeight = int(742/self._windowAspectRatio)
minWidth = 742

self._root.minsize(minWidth,minHeight)

def _on_resize(self,event):
if event.widget == self._root:
if not self._resizing:
self._resizing = True
widthToApply = self._root.winfo_width()
heightToApply = self._root.winfo_height()
if self._windowAspectRatio != None:
desiredWidth = int(event.height * self._windowAspectRatio)
desiredHeight = int(event.width / self._windowAspectRatio)
if abs(event.width - self._windowWidth) > abs(event.height - self._windowHeigth):
widthToApply = event.width
heightToApply = desiredHeight
else:
widthToApply = desiredWidth
heightToApply = event.height
self._root.geometry(f"{widthToApply}x{heightToApply}")
self._windowWidth = self._root.winfo_width()
self._windowHeigth = self._root.winfo_height()
self._root.update()
self._resizing = False

window = Window()

def on_close():
global running
running = False

window._root.protocol("WM_DELETE_WINDOW", on_close)

running = True

while running:
window._root.update()

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