old_contents: # coding: utf-8
  
  from datetime import datetime
  
  from flask import Flask
  from flask import render_template, request
  import logging
  import telegram
  
  
  app = Flask(__name__)
  logging.basicConfig(level=logging.DEBUG,
                      format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')
  bot_name = '@DrakeetLoveBot'
  
  global bot
  # 由于 美国节点，只能 git 部署，我不得不开源 token，请不要随便拿去用，如需生成你自己的 token
  # 请联系 http://telegram.me/BotFather 谢谢！
  bot = telegram.Bot(token='192666820:AAHLcmxXJ68UvkB-nWgbPVGzb_bkDoTNlcU')
  
  @app.route('/')
  def index():
      return r'{"drakeet":"hehe"}'
  
  
  @app.route('/<token>', methods=['POST'])
  def launcher(token):
      if request.method == "POST":
          update = telegram.Update.de_json(request.get_json(force=True))
          logging.info('I am still alive.')
          handle_message(update.message)
      return 'ok'
  
  
  def handle_message(message):
      text = message.text
      if '/echo' in text:
          echo(message)
      if '/milestone' in text:
          milestone(message)
  
  
  def parse_cmd_text(text):
      # Telegram understands UTF-8, so encode text for unicode compatibility
      text = text.encode('utf-8')
      cmd = None
      if '/' in text:
          try:
              index = text.index(' ')
          except ValueError as e:
              return (text, None)
          cmd = text[:index]
          text = text[index + 1:]
      if not cmd == None and '@' in cmd:
          cmd = cmd.replace(bot_name, '')
      return (cmd, text)
  
  
  def echo(message):
      '''
      repeat the same message back (echo)
      '''
      cmd, text = parse_cmd_text(message.text)
      if text == None or len(text) == 0:
          pass
      else:
          chat_id = message.chat.id
          bot.sendMessage(chat_id=chat_id, text=text)
  
  
  def milestone(message):
      from_day = datetime(2013, 7, 16)
      now = datetime.now()
      text = 'drakeet 和他家老婆大人已经认识并相爱 %d 天啦（此处应该有恭喜' % (now - from_day).days
      chat_id = message.chat.id
      bot.sendMessage(chat_id=chat_id, text=text)
  
new_contents: # coding: utf-8
  
  from datetime import datetime
  
  from flask import Flask
  from flask import render_template, request
  import logging
  import telegram
  
  
  app = Flask(__name__)
  logging.basicConfig(level=logging.DEBUG,
                      format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')
  bot_name = '@DrakeetLoveBot'
  
  global bot
  # 由于 美国节点，只能 git 部署，我不得不开源 token，请不要随便拿去用，如需生成你自己的 token
  # 请联系 http://telegram.me/BotFather 谢谢！
  bot = telegram.Bot(token='192666820:AAHLcmxXJ68UvkB-nWgbPVGzb_bkDoTNlcU')
  
  @app.route('/')
  def index():
      return r'{"drakeet":"hehe"}'
  
  
  @app.route('/<token>', methods=['POST'])
  def launcher(token):
      if request.method == "POST":
          update = telegram.Update.de_json(request.get_json(force=True))
          logging.info('I am still alive.')
          handle_message(update.message)
      return 'ok'
  
  
  def handle_message(message):
      text = message.text
      if '/echo' in text:
          echo(message)
      if '/milestone' in text:
          milestone(message)
      if '/help' in text:
          help(message)
  
  
  def parse_cmd_text(text):
      # Telegram understands UTF-8, so encode text for unicode compatibility
      text = text.encode('utf-8')
      cmd = None
      if '/' in text:
          try:
              index = text.index(' ')
          except ValueError as e:
              return (text, None)
          cmd = text[:index]
          text = text[index + 1:]
      if not cmd == None and '@' in cmd:
          cmd = cmd.replace(bot_name, '')
      return (cmd, text)
  
  
  def echo(message):
      '''
      repeat the same message back (echo)
      '''
      cmd, text = parse_cmd_text(message.text)
      if text == None or len(text) == 0:
          pass
      else:
          chat_id = message.chat.id
          bot.sendMessage(chat_id=chat_id, text=text)
  
  
  def milestone(message):
      from_day = datetime(2013, 7, 16)
      now = datetime.now()
      text = 'drakeet 和他家老婆大人已经认识并相爱 %d 天啦（此处应该有恭喜' % (now - from_day).days
      chat_id = message.chat.id
      bot.sendMessage(chat_id=chat_id, text=text)
  
  
  def help(message):
      text = """
      /echo - repeat the same message back
      /milestone - Get drakeet's milestone
      """
      chat_id = message.chat.id
      bot.sendMessage(chat_id=chat_id, text=text)
  
subject: Add help.