Xingfu Y. XingfuY

Useful materials:

	from random import choice
	from scrapy import signals
	from scrapy.exceptions import NotConfigured


	class RotateUserAgentMiddleware(object):
	"""Rotate user-agent for each request."""
	def __init__(self, user_agents):
	self.enabled = False
	self.user_agents = user_agents

	#!/bin/bash

	DBUSER="root";
	DBPASS="";
	DBHOST="localhost";

	DB_OLD=mydatabase
	DB_NEW=clone_mydatabase

	DBCONN="--host=${DBHOST} --user=${DBUSER} --password=${DBPASS}";