Making Shortcuts Using Python

import pyautogui as ag
import keyboard
import time

mpos_list=[]
while True:
    while True:
        if keyboard.is_pressed('F3'):
           mpos = ag.position()
           mpos_list.append(mpos)
           print(mpos)
           break
    while True:
        if keyboard.is_pressed('F4'):
            print('F4')
            break