class_docstr: Simple class for tracking rule times and call count
class_docstr_tok: ["Simple","class","for","tracking","rule","times","and","call","count"]
code: def __str__(self):
      return "{:14.8f} ms  {:6d} calls  {:14.8f} avg".format(
          self.tracked_time, self.calls, self.tracked_time / self.calls
      )
  
file_path: streamalert/streamalert/shared/stats.py
imports: from collections import defaultdict
  import time
  from streamalert.shared.logger import get_logger
label_desc: Use image node_id 4 for calling the RuleStatistic obj's underlying member method code with example usage: obj.__str__() and returns: str