zoukankan      html  css  js  c++  java
  • python & MySQLdb(one)

    python开发过程中用到数据库无外乎MYSQL,Mangodb,redis三种,三者数据库使用可能存在差异,但在一些基础的语句使用时都是大同小异的,这阶段学习了一些基础操作,记录下

    add:

    # -*- coding: utf-8 -*-
    import MySQLdb
    try:
      conn=MySQLdb.connect(host='192.168.65.146',port=3306,db='student',user='root',passwd='toor',charset='utf8')
      csl=conn.cursor()
      count=csl.execute("insert into stu(stu_id,stu_name,stu_phone,stu_hometown) values('0003','kj','19564832601',河北)")
      print(count)
      conn.commit()
      csl.close()
      conn.close()
    except Exception as e:
      print (e).

    delete:

    # -*- coding:utf-8 -*-
    import MySQLdb
    try:
        conn=MySQLdb.connect(host='192.168.65.146',port=3306,db='student',user='root',passwd='toor',charset='utf8')
        cs1=conn.cursor()
        count=cs1.execute("delete from stu where stu_id=4")
        print(count)
        conn.commit()
        conn.close()
    except Exception as e:
        print(e)

    update:

    # -*- coding:utf-8 -*-
    import MySQLdb
    try:
        conn=MySQLdb.connect(host='192.168.65.146',port=3306,db='student',user='root',passwd='toor',charset='utf8')
        cs1=conn.cursor()
        count=cs1.execute("update stu set stu_phone='10005954565' where stu_name='张良'")
        print(count)
        conn.commit()
        conn.close()
    except Exception as e:
        print(e)

    search:

    # -*- coding: utf-8 -*-
    import MySQLdb
    try:
        conn=MySQLdb.connect(host='192.168.65.146',port=3306,db='student',user='root',passwd='toor',charset='utf8')
        cs1=conn.cursor()
        #cs1.execute("select * from stu where stu_id=1")
        #result=cs1.fetchone()  查询一行
        cs1.execute("select * from stu")
        result=cs1.fetchall()#查询全部
        print(result)
        cs1.close()
        conn.close()
    except Exception as e:
        print(e)
  • 相关阅读:
    bzoj 3456 城市规划 —— 分治FFT / 多项式求逆 / 指数型生成函数(多项式求ln)
    洛谷 P4721 [模板]分治FFT —— 分治FFT / 多项式求逆
    CF 438 E & bzoj 3625 小朋友和二叉树 —— 多项式开方
    Codeforces 447
    Codeforces 1099
    Codeforces 991
    Codeforces 994
    Codeforces 989
    Codeforces 1084
    xj膜你赛(n-1)
  • 原文地址:https://www.cnblogs.com/kk328/p/9901026.html
Copyright © 2011-2022 走看看