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)