Using a variable between two files

I have been trying multiple ways to try and get a variable from file#1 to file#2 but every time I import file#1 to file#2 it seems like file#2 fails to work. I think this is due to file#2 being run in a subprocess in file#1 but I'm not too sure. Is there a way for me to import the variable without this happening or should I do a main file and run the other 2 files from there?

testaction is the variable I am trying to use in the other file.

Ex:File#1

def listen_for_command():    global testaction    global keyword_detected    while keyword_detected:        try:            if "weather in" in cortana_input:                testaction = "weather"                city_text = cortana_input.split("weather in", 1)[1].strip()                print(f"Fetching weather for {city_text}")                #weather based on city                weather_info = get_weather_data(city_text)                print(weather_info)                engine.say(weather_info)                engine.runAndWait()

File#2

#import file#1 or from file#1 import testaction causes file#2 to not rundef listen_for_input():    global action, next_action, animation_active    while True:        user_input = input("Enter action: ").strip()        #I want user_input = testaction

This is how I have the files set up running in File#2

# Start the keyword listener in a separate threadkeyword_thread = threading.Thread(target=listen_for_keyword, daemon=True)keyword_thread.start()# Wait for the keyword detection before starting the animation scriptwhile not keyword_detected:    time.sleep(1)animation_thread = threading.Thread(target=lambda: subprocess.run(["python", "animation.py"]))animation_thread.start()listen_for_command()# Once the keyword is detected, start the animation script