code: def __init__(self, app_tracker: AppTracker, *, frequency: float):
      super().__init__()
  
      self.frequency = frequency
      self.app_tracker = app_tracker
      self.last_committed = time.time()
      self.commits_count = 0
      self.indicators = {}
      self.data = {}
      self.lock = threading.Lock()
  
file_path: labml/client/labml/internal/tracker/writers/app.py
imports: import threading
  import time
  from typing import Dict
  import numpy
  from .None import Writer
  from ..indicators import Indicator
  from ..indicators.numeric import NumericIndicator
  from ...app import AppTracker, Packet, AppTrackDataSource
label_desc: Use image node_id 1 to create a new Writer object from inherited base classes: WriteBase, AppTrackDataSource with example: obj = Writer(app_tracker)