Exception ignored in: <function Image.__del__ at 0x7fb34d3e4268>
Traceback (most recent call last):
  File "/usr/lib/python3.7/tkinter/__init__.py", line 3504, in __del__
RuntimeError: main thread is not in main loop
Tcl_AsyncDelete: async handler deleted by the wrong thread
Abandon

import time
import threading
import matplotlib.pyplot as plt


class MyThread(threading.Thread):

	def __init__(self):
		super().__init__()

	def run(self):
		plt.ion()

		while self._running:
			fig = plt.gcf()
			fig.clear()

			plt.show(block=False)
			plt.pause(0.1)

		plt.ioff()
		plt.close('all')

my_thread = MyThread()

my_thread.setDaemon(True)
my_thread._running = True
my_thread.start()

time.sleep(2)
my_thread._running = False

my_thread.join()