Loop

from datetime import timedelta, datetime





class Main:

    def __init__(self):

        self.agora = datetime.now()

        self.somar = timedelta(seconds=3)

        self.agendado = str(self.agora + self.somar)



        while True:

            now = datetime.now()

            if str(now) >= self.agendado and self.verificar:

                break