| Instance Variable | f | The function to call. | 
| Instance Variable | a | A tuple of arguments to pass the function. | 
| Instance Variable | kw | A dictionary of keyword arguments to pass to the function. | 
| Instance Variable | clock | A provider of twisted.internet.interfaces.IReactorTime.
The default istwisted.internet.reactor.
Feel free to set this to something else, but it probably ought to be set 
*before* callingstart. | 
| Instance Variable | running | A flag which is Truewhilefis scheduled to be 
called (or is currently being called). It is set toTruewhenstartis called and set toFalsewhenstopis
called or iffraises an exception. In either case, it will beFalseby the time theDeferredreturned bystartfires its callback or errback. (type:bool) | 
| Method | deferred | DEPRECATED. Deferredfired
when loop stops or fails. | 
| Class Method | withCount | An alternate constructor for LoopingCallthat makes available the number of calls which should have occurred since 
it was last invoked. | 
| Method | start | Start running function every interval seconds. | 
| Method | stop | Stop running function. | 
| Method | reset | Skip the next iteration and reset the timer. | 
| Method | __call__ | Undocumented | 
| Method | __repr__ | Undocumented | 
| Instance Variable | _realLastTime | When counting skips, the time at which the skip counter was last invoked. (type: float) | 
| Instance Variable | _runAtStart | A flag indicating whether the 'now' argument was passed to LoopingCall.start. (type:bool) | 
| Method | _intervalOf | Determine the number of intervals passed as of the given point in 
time. | 
| Method | _scheduleFrom | Schedule the next iteration of this looping call. |