(self, when, callback, *args, context=None)
return CFTimerHandle(
            loop=self,
            timeout=when - self.time(),
            callback=context_callback(context, callback),
            args=args
        )
Like call_later(), but uses an absolute time.

        Absolute time corresponds to the event loop's time() method.
Like call_later(), but uses an absolute time.
Like call_later () but uses an absolute time .
def call_at(self, when, callback, *args, context=None):
        """Like call_later(), but uses an absolute time.

        Absolute time corresponds to the event loop's time() method.
        """
        self._check_not_coroutine(callback, 'call_at')

        return CFTimerHandle(
            loop=self,
            timeout=when - self.time(),
            callback=context_callback(context, callback),
            args=args
        )
def call_at ( self , when , callback , * args , context = None ) : self . _check_not_coroutine ( callback , 'call_at' ) return CFTimerHandle ( loop = self , timeout = when - self . time ( ) , callback = context_callback ( context , callback ) , args = args )