text: #!/usr/local/bin/python3
  # coding: utf-8
  
  # YYeTsBot - change_datetime.py
  # 6/15/21 14:15
  #
  
  __author__ = "Benny <benny.think@gmail.com>"
  
  import time
  
  import pymongo
  
  client = pymongo.MongoClient()
  from bson import ObjectId
  
  comment = client["zimuzu"]["comment"]  # date
  users = client["zimuzu"]["users"]  # date
  
  all_comments = list(comment.find())
  all_users = list(users.find())
  
  for item in all_comments:
      object_id = item["_id"]
      old_date = time.strptime(item["date"], "%a %b %d %H:%M:%S %Y")
      new_date = time.strftime("%Y-%m-%d %H:%M:%S", old_date)
  
      condition = {"_id": object_id}
      update = {"$set": {"date": new_date}}
      comment.find_one_and_update(condition, update)
  
  for item in all_users:
      # unique for username
      object_id = item["_id"]
      old_date = time.strptime(item["date"], "%a %b %d %H:%M:%S %Y")
      new_date = time.strftime("%Y-%m-%d %H:%M:%S", old_date)
  
      condition = {"_id": object_id}
      update = {"$set": {"date": new_date}}
      users.find_one_and_update(condition, update)
  