捣鼓捣鼓,跨过好多坑终于在Mac上配置好了开发环境,开始学Python啦!
今天学习的是Python连接数据库,安装了python-mysql包后,使用它自带的一些方法就可以连接了:
[python]
!/usr/bin/python
-- coding: utf-8 --
import sys
import MySQLdb
db = None
try:
# 连接数据库
db=MySQLdb.connect(host="localhost",
user="root",passwd="",
db="wegroup",
charset = "utf8",
unix_socket="/Applications/XAMPP/xamppfiles/var/mysql/mysql.sock")
# unix_socket
cursor = db.cursor()
# 执行一个查询
cursor.execute("SELECT VERSION()")
data = cursor.fetchone()
# 显示数据库的版本
print "Database version: %s" % data
# 创建表user(id,name) 并插入数据
cursor.execute("CREATE TABLE IF NOT EXISTS user(id INT PRIMARY KEY AUTO_INCREMENT, name VARCHAR(30))")
cursor.execute("INSERT INTO user(name) VALUES('user1')")
cursor.execute("INSERT INTO user(name) VALUES('user2')")
# commit 后数据才会真正添加到数据表中!
db.commit()
# 更新数据
cursor.execute("UPDATE user SET name = %s WHERE id = %s",("xiaolai" , 2));
# 获取数据并遍历
cursor.execute("SELECT * FROM user");
# 获取描述信息
desc = cursor.description
print "描述信息:", desc
# 打印表头
print "%s %s" % (desc[0][0],desc[1][0])
# 获取结果数
count = cursor.rowcount
for i in range(count):
row = cursor.fetchone()
# 每一个都是一个元组
print row[0], row[1]
finally:
# 记得要关闭!
if db:
db.close()