def __init__(self):
		'''创建表'''
		self.conn = sqlite3.connect("./items.db")
		if VERBOSE:
			print 'Database connection OPEN.'
		# Domain 表
		self.conn.execute(CTABLE_DOMAIN)
		# Website 表
		self.conn.execute(CTABLE_WEBSITE)
		# Rule 表 
		self.conn.execute(CTABLE_RULESETS)

		self.conn.commit()
		if VERBOSE:
			cur = self.conn.cursor()
			print 'Tables:',cur.execute("SELECT name FROM sqlite_master WHERE type = 'table'").fetchall()
def refresh_content(self, order=None, name=None):
        "Re-download comments and reset the page index"

        order = order or self.content.order
        url = name or self.content.name

        with self.term.loader('Refreshing page'):
            self.content = SubmissionContent.from_url(
                self.reddit, url, self.term.loader, order=order,
                max_comment_cols=self.config['max_comment_cols'])
        if not self.term.loader.exception:
            self.nav = Navigator(self.content.get, page_index=-1)