安装 pymysql 模块
pip3 install pymysql
# python2, 默认无 pip 命令
# python3, 默认自带 pip3 命令
mysql基本操作
# 导入 pymysql 模块
import pymysql
# 创建连接
conn = pymysql.connect(host='192.168.0.214', port=3306, user='root', passwd='123456', db='tmpdb')
# 获取光标
cursor = conn.cursor()
# 插入一行
result = cursor.execute("insert into tmp(name) values (%s)",("jim"))
# 插入多行
result = cursor.executemany("insert into tmp(name) values (%s)",[("james1"),("james2"),("james2")])
# 修改后必须提交
conn.commit()
# 获取一行数据
cursor.execute('select * from tmp')
r = cursor.fetchone()
print(r)
# 获取4行数据
cursor.execute('select * from tmp')
r = cursor.fetchmany(4)
print(r)
# 获取影响的行数
result = cursor.execute('select * from tmp')
print(result)
# 获取所有的值
values = cursor.fetchall()
print(values)
# 把光标移到最开始处
cursor.scroll(0, mode='absolute')
# 关闭光标
cursor.close()
# 关闭连接
conn.close()
在操作mysql中应当禁止使用字符串拼接sql 的方式
# 禁止例子 :
inp = input('please input name: ')
sql = 'insert into tmp(name) values("%s")'
sql = sql %(inp,)
r = cursor.execute(sql)
conn.commit()
# 推荐例子:
inp = input('please input name: ')
print(inp, type(inp))
r = cursor.execute('insert into tmp(name) values(%s)', inp)
conn.commit()