Decorator to limit the maximum number of times a function will run per second.

max_per_second.py

def max_per_second(mps):
    def decorate(func):
        ind = [0]
        arr = [0.0]*mps
        def wrapper(*args, **kwargs):
            now   = time.time()
            stime = (arr[ind[0]]+1) - now

            if stime > 0:
                time.sleep(stime)

            arr[ind[0]] = time.time()
            ind[0]      = (ind[0] + 1) % mps
            return func(*args, **kwargs)
        return wrapper
    return decorate