threading.py

"""
Python thread pause, resume, exit detail and Example _python
https://topic.alibabacloud.com/a/python-thread-pause-resume-exit-detail-and-example-_python_1_29_20095165.html
How to start/stop a Python function within a time period (ex. from 10 am to 12:30pm)?
https://stackoverflow.com/questions/41289947/how-to-start-stop-a-python-function-within-a-time-period-ex-from-10-am-to-123
"""
import threading
import time


class Job(threading.Thread):

    def __init__(self, *args, **kwargs):
        super(Job, self).__init__(*args, **kwargs)
        self.__flag = threading.Event() # The flag used to pause the thread
        self.__flag.set() # Set to True
        self.__running = threading.Event() # Used to stop the thread identification
        self.__running.set() # Set running to True

    def run(self):
        while self.__running.isSet():
            self.__flag.wait() # return immediately when it is True, block until the internal flag is True when it is False
            print(time.time())
            time.sleep(1) # By time.sleep(1) you repeat the loop every 1 sec.

    def pause(self):
        self.__flag.clear() # Set to False to block the thread

    def resume(self):
        self.__flag.set() # Set to True, let the thread stop blocking

    def stop(self):
        self.__flag.set() # Resume the thread from the suspended state, if it is already suspended
        self.__running.clear() # Set to False


a = Job()
a.start()
time.sleep(3)
a.pause()
time.sleep(3)
a.resume()
time.sleep(3)
a.pause()
time.sleep(5)
a.stop()