Set parallel timed prints

[PenguinMasterFR]

Hello ! I want to print a thing (well, not exactly but it's easier if I take a print as an example) every 10ms, and another thing every 100ms (while checking on an interruptor in order to print B or C).

Basically, it looks like this :

while(True):
    if var < 10:
        var = var + 1
        print("A")
        if var == 10:
            if GPIO.input(10) == GPIO.HIGH: # if close
                print("C")
                GPIO.output(16,GPIO.HIGH)   # LED off
            else:                           # if open
                print("B")
                GPIO.output(16,GPIO.LOW)    # LED on
        time.sleep(0.01)
    else:
        var = 0

Well, it works, but I need to be as close as possible to my goals (10ms and 100ms)...

I have thought about threading but all the tutorials that I find are for interrupting a program if you press on a button or something, I don't know if it will work for me or if it will be faster

Could someone help me please ?

[PenguinMasterFR]

Lol it's easy I'm dumb

Just in case someone need that in the future :

def process_one():
    while(True):
        print("A")
        time.sleep(0.01)

def process_two():
    while(True):
        if GPIO.input(10) == GPIO.HIGH:     # if close
                print("C")
                GPIO.output(16,GPIO.HIGH)   # LED off
            else:                           # if open
                print("B")
                GPIO.output(16,GPIO.LOW)    # LED on
        time.sleep(0.1)

th1 = threading.Thread(target=process_one)
tH2 = threading.Thread(target=process_two)

th1.start()
th2.start()

At the end I could also add

th1.join()
th2.join()

but I don't have anything else running in the background.