python-连接mysql实例

import pymysql

# 创建连接
conn = pymysql.connect(host='192.168.71.140', port=3306, user='root', passwd='521521', db='oldboy')
# 创建游标
cursor = conn.cursor()
#批量插入数据
data = [
    ("N1","10", "2018-7-10","M"),
    ("N2","11", "2018-7-11","M"),
    ("N3","12","2018-7-12","F"),

]
cursor.executemany("insert into student (name,age,register_date,gender) values(%s,%s,%s,%s)",data)#插入数据
# 执行SQL，并返回收影响行数

#effect_row = cursor.execute("select * from student")


#print(cursor.fetchone())#打印出一条数据fetchone()

#print(cursor.fetchmany(3))#打印三条数据

print(cursor.fetchall())#打印所有数据

# 执行SQL，并返回受影响行数
# effect_row = cursor.execute("update hosts set host = '1.1.1.2' where nid > %s", (1,))

# 执行SQL，并返回受影响行数
# effect_row = cursor.executemany("insert into hosts(host,color_id)values(%s,%s)", [("1.1.1.11",1),("1.1.1.11",2)])


# 提交，不然无法保存新建或者修改的数据
conn.commit()

# 关闭游标
cursor.close()
# 关闭连接
conn.close()

 必须还得给mysql得root账号授权才可以远程连接：

在刷新一下；