GeezerVison

from datetime import datetime Make_It_Fail = True def _win_set_time(time_tuple): import win32api dayOfWeek = datetime(*time_tuple).isocalendar()[2] t = time_tuple[:2] + (dayOfWeek,) + time_tuple[2:] win32api.SetSystemTime(*t) def _linux_set_time(time_tuple): import subprocess import shlex time_string = datetime(*time_tuple).isoformat() #subprocess.call(shlex.split("timedatectl set-ntp false")) # May be necessary subprocess.call(shlex.split("date -s '%s'" % time_string), stdout=subprocess.DEVNULL, stderr=subprocess.STDOUT) subprocess.call(shlex.split("hwclock -w")) def change_time(time_tuple): import sys if sys.platform.startswith('linux'): _linux_set_time(time_tuple) elif sys.platform == 'win32': _win_set_time(time_tuple) def change_time_before(): time_tuple = (2024, # Year 5, # Month 18, # Day 23, # Hour 34, # Minute 43, # Second 0 # Millisecond ) print('Date/Time before queue.get(): 05/18/2024 23:34:43\n') change_time(time_tuple) def change_time_after(): time_tuple = (2023, # Year 5, # Month 18, # Day 18, # Hour 34, # Minute 43, # Second 0 # Millisecond ) print('Date/Time during queue.get(): 05/18/2023 18:34:43\n') change_time(time_tuple) def start_queue(): import queue import time q = queue.Queue() print ("Calling queue get with blocking and 10 seconds timeout\n") ts = time.monotonic() try: q.get(True, 10.0) except queue.Empty: te = time.monotonic() td = te - ts print (f"{td:0.2f} seconds has elapsed and it is not blocked\n") def test_queue(): import threading import time if Make_It_Fail: change_time_before() t = threading.Thread(target=start_queue) t.start() time.sleep(1.0) if Make_It_Fail: change_time_after() t.join() test_queue()