import multiprocessingimport platformimport mp_tst_adef run_my_multi():    p_xyz = multiprocessing.Process(        target=mp_tst_a.run_main,        args=())    # p_... = ...    p_xyz.start()    # p_... .start()    p_xyz.join()    # p_... .join()    returnif __name__ == '__main__':    print('py:', platform.python_version())    run_my_multi()

import multiprocessingimport timeimport platformmain_queue = multiprocessing.Queue()def load_directory(def_queue):    content_def = def_queue.get()    content_def['load_directory_is_alive'] = True    def_queue.put(content_def)    # ---- do something ... --------    print('\n' + 'LOAD DIRECTORY:')    for x in range(3):        time.sleep(.6)        print('do something ...')    print('\n' + 'LOAD ok' + '\n')    content_def = def_queue.get()    content_def['load_directory_is_alive'] = False    content_def['run_load_file'] = True    def_queue.put(content_def)    returndef load_files(def_queue):    content_def = def_queue.get()    run_load_file_i = content_def['run_load_file']    def_queue.put(content_def)    # ---- do something ... --------    print('LOAD FILE:')    if run_load_file_i:        for x in range(3):            time.sleep(.6)            print('FILE ' + str(x))    print('\n' + 'LOAD ok' + '\n')    returndef run_main():    global main_queue    content = {        'load_directory_is_alive': None,        'run_load_file': None,        'last_download_date': None        }    main_queue.put(content)    rest = 0.2  # for test, try different values    time.sleep(rest)    jobs = []    content = main_queue.get()    content['last_download_date'] = 'xx.xx.xxxx'    main_queue.put(content)    time.sleep(rest)    # ---- process_1.1: load_directory -----------------------------------    process_1_1 = multiprocessing.Process(        target=load_directory, name='load_directory',        args=(main_queue, ))    jobs.append(process_1_1)    process_1_1.start()    time.sleep(rest)    # ---- do not begin process_2 before process_1.1: load_directory exits    while process_1_1.is_alive():        pass        time.sleep(rest)    # ---- process_2: load_files -----------------------------------------    process_2 = multiprocessing.Process(        target=load_files, name='load_files',        args=(main_queue, ))    jobs.append(process_2)    process_2.start()    process_1_1.join()    process_2.join()    returnif __name__ == "__main__":    print('py:', platform.python_version())    run_main()