old_contents: #! /usr/bin/env python
  # -*- coding: utf-8 -*-
  
  BOT_NAME = 'chem_spider'
  
  SPIDER_MODULES = ['chem_spider.spiders']
  NEWSPIDER_MODULE = 'chem_spider.spiders'
  
  DEFAULT_ITEM_CLASS = 'chem_spider.items.AladdinItem'
  ITEM_PIPELINES = {
      'chem_spider.piplines.ItemStoreProcess': 1
  }
  
  LOG_FILE = 'logs/debug.log'
  LOG_LEVEL = 'DEBUG'
  LOG_STDOUT = True
  
  # cookies
  COOKIES_ENABLED = True
  COOKIES_DEBUG = False
  
  # aladdin
  ALADDIN_BASE_URLS = {
      'fxkx': 'http://www.aladdin-e.com/catalog/1485',
      'smkx': 'http://www.aladdin-e.com/catalog/1424',
      'gdhx': 'http://www.aladdin-e.com/catalog/635',
      'clkx': 'http://www.aladdin-e.com/catalog/1357'
  }
  
  # mongodb
  # mongodb_uri = 'mongodb://localhost:27017'
  mongodb_uri = 'mongodb://121.40.85.47:27017'
  mongodb_db_name = 'chem_spider'
  mongodb_user = 'mutoulbj'
  mongodb_passwd = 'fan'
new_contents: #! /usr/bin/env python
  # -*- coding: utf-8 -*-
  
  BOT_NAME = 'chem_spider'
  
  SPIDER_MODULES = ['chem_spider.spiders']
  NEWSPIDER_MODULE = 'chem_spider.spiders'
  
  DEFAULT_ITEM_CLASS = 'chem_spider.items.AladdinItem'
  ITEM_PIPELINES = {
      'chem_spider.piplines.ItemStoreProcess': 1
  }
  
  LOG_FILE = 'logs/debug.log'
  LOG_LEVEL = 'DEBUG'
  LOG_STDOUT = True
  
  # cookies
  COOKIES_ENABLED = True
  COOKIES_DEBUG = False
  
  # aladdin
  ALADDIN_BASE_URLS = {
      'fxkx': 'http://www.aladdin-e.com/catalog/1485',
      'smkx': 'http://www.aladdin-e.com/catalog/1424',
      'gdhx': 'http://www.aladdin-e.com/catalog/635',
      'clkx': 'http://www.aladdin-e.com/catalog/1357'
  }
  
  # mongodb
  # mongodb_uri = 'mongodb://localhost:27017'
  mongodb_db_name = 'chem_spider'
  mongodb_user = 'mutoulbj'
  mongodb_passwd = 'fan'
  
subject: Update settings.py