human
Solve the following python programming problem given the following code:
def RetryUntilValidOrLimitReached(method, limit, validation_fn, sleep_s = 1, catch_exceptions = ()) : 
    "Executes a method until the retry limit or validation_fn returns True.

  The method is always called once so the effective lower limit for 'limit' is
  1.  Passing in a number less than 1 will still result it the method being
  called once.

  Args:
    method: The method to execute should take no arguments.
    limit: The number of times to try this method.  Must be >0.
    validation_fn: The validation function called on the function result to
        determine whether to keep looping.
    sleep_s: The time to sleep in between invocations.
    catch_exceptions: Tuple of exception types to catch and count as failures.
  Returns:
      Whatever the method last returned, implicit False would indicate the
        method never suceeded.
  " 
    assert (limit > 0), 'Limit must be greater than 0' 
    def _execute_method(helper) : 
        try : 
            return method () 
except catch_exceptions : 
            if (not helper.remaining) : 
                raise 
return None 
helper = RetryHelper ((result - 1)) 
    result = _execute_method (helper) 
    while ((not validation_fn (result)) and helper.RetryIfPossible ()) : 
        time.sleep (sleep_s) 
        result = _execute_method (helper) 
return result 

    
    

    Fix the buggy line: helper = RetryHelper ((result - 1))
assistant
#Here is Python code to determine whether to keep looping.

helper = RetryHelper ((limit - 1))