python操作sqlite的CRUD实例分析_Python

python操作sqlite的CRUD实例分析

2020-06-24 09:30work24 Python

这篇文章主要介绍了python操作sqlite的CRUD实现方法,涉及Python操作SQLite数据库CURD相关技巧,需要的朋友可以参考下

本文实例讲述了python操作sqlite的CRUD实现方法。分享给大家供大家参考。具体如下：

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									import sqlite3 as db

									conn = db.connect('mytest.db')

									cursor = conn.cursor()

									cursor.execute("drop table if exists datecounts")

									cursor.execute("create table datecounts(date text, count int)")

									cursor.execute('insert into datecounts values("12/1/2011",35)')

									cursor.execute('insert into datecounts values("12/2/2011",42)')

									cursor.execute('insert into datecounts values("12/3/2011",38)')

									cursor.execute('insert into datecounts values("12/4/2011",41)')

									cursor.execute('insert into datecounts values("12/5/2011",40)')

									cursor.execute('insert into datecounts values("12/6/2011",28)')

									cursor.execute('insert into datecounts values("12/7/2011",45)')

									conn.row_factory = db.Row

									cursor.execute("select * from datecounts")

									rows = cursor.fetchall()

									for row in rows:

									  print("%s %s" % (row[0], row[1]))

									cursor.execute("select avg(count) from datecounts")

									row = cursor.fetchone()

									print("The average count for the week was %s" % row[0])

									cursor.execute("delete from datecounts where count = 40")

									cursor.execute("select * from datecounts")

									rows = cursor.fetchall()

									for row in rows:

									  print("%s %s" % (row[0], row[1]))