编程题

使用Python的sqlite3库完成以下操作:

1.创建一个名为cpu的数据库文件,并创建一张Rate的表(表有三个字段:ID、Rate、updatetime)

2.记录下十秒钟cpu相关数据,并删除第id为1的数据。

import sqlite3

import datetime

import psutil #获取cpu当前占比

conn = sqlite3.connect(" ")

creatsql = "create table Rate(ID integer primary key, Rate float,updatetime time)"

cur.execute(creatsql)

conn.commit()

insertsql = "insert into Rate(ID,Rate,updatetime) values(%d,%f,'%s')"

checksql = "select * from Rate"

for x in range(0,10):

nowtime = datetime.datetime.now()

nowtime = nowtime.strftime('%Y-%m-%d %H:%M:%S')

cpu_per = float(psutil.cpu_percent(1))

cur.(insertsql % (x,cpu_per,nowtime))

conn.commit()

cur.execute(checksql)

data = https://tiku.scratchor.com/paper/question_answer/cur.fetchall()

delsql="delete from Rate where ID=%d"

cur.execute(delsql %1)

conn.commit()

conn.close()

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