标签：pat cut mit oar none foreign 增加 ash and
SQLite作为一款轻型数据库，管理工具有很多，比如SQLite Expert Professional，很适合用来存储Python网站，爬虫的相关数据，下面列出基本的增删查改操作
读取操作：
conn1 = sqlite3.connect(board.DatabasePath) conn1.row_factory = sqlite3.Row conn1.execute("pragma foreign_key=on") c1 = conn1.cursor() try: #执行查询操作 c1.execute("select username as username from register where name=?;", (username,)) #异常处理 except (sqlite3.DatabaseError) as e: print e return None else: user_row = c1.fetchone() #调用数据 finally: conn1.close() #关闭连接
增加数据：
conn = sqlite3.connect(board.DatabasePath) conn.row_factory = sqlite3.Row conn.execute("pragma foreign_key=on") c = conn.cursor() md5 = hashlib.md5() md5.update(password) encrypted_passwd = md5.hexdigest() try: #增加数据 c.execute(" insert into register (name,work,email,username,password) values (?,?,?,?,?);", (name, workplace, email, username, encrypted_passwd)) c.execute("select last_insert_rowid() as user_id from register;") except (sqlite3.DatabaseError) as e: print e conn.rollback() return False else: conn.commit() return True finally: conn.close()
删除操作：
conn=sqlite3.connect(board.DatabasePath) conn.execute("pragma foreign_key=on") conn.row_factory=sqlite3.Row c=conn.cursor() try: c.execute("delete from setting where key=? and parent_id=?;",(self.slick.key,self.id)) except (sqlite3.DatabaseError) as e: print e conn.rollback() return False else: conn.commit() self.slick.items.pop(self.id) self=None return True finally: conn.close()
修改操作：
conn=sqlite3.connect(board.DatabasePath) conn.execute("pragma foreign_key=on") conn.row_factory=sqlite3.Row c=conn.cursor() try: c.execute("update setting set value=? where key=? and name=?;",(self.title,self.key,"jumbotron_title")) c.execute("update setting set value=? where key=? and name=?;",(self.content,self.key,"jumbotron_content")) except (sqlite3.DatabaseError) as e: print e conn.rollback() return False else: conn.commit() return True finally: conn.close()
标签：pat cut mit oar none foreign 增加 ash and
原文地址：http://www.cnblogs.com/FZfangzheng/p/7588793.html
