Is there an way to run a While loop 60 times a second?

Question

I'm trying to create a game in Tkinter, and I want to have a While loop run only x times a second. Evenly spaced.

I have tried dividing 1 by X and using the time module to wait that amount. But it didn't run it 60 times a second, only 50.

def start(self):
        Frame.__init__(self, self.master)
        self.fpLength = 1 / self.fps
        while True:
            # Code here
            time.sleep(self.fpLength)

I expect the code to run 60 times a second. But it runs around 55.

Answer 1

If you are doing it in thread (see my comment) you can try something like

def start(self):
        Frame.__init__(self, self.master)
        # self.fpLength = 1 / self.fps
        while True:
            # Code here
            clock = time.perf_counter() * 60  #  measer time in 1/60 seconds
            sleep = int(clock) + 1 - clock  #  time till the next 1/60 
            time.sleep(sleep/60)

Of cause you can use self.fps instead of constant 60 here, I use it just for more clear comments.