Python等级考试六级编程题:记录cpu相关数据,并删除第id为1的数据。
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(" ① ") creatsql = "create table Rate(ID integer primary key, Rate float,updatetime time)" ② 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. ③ (insertsql % (x,cpu_per,nowtime)) conn.commit() cur.execute(checksql) data = cur.fetchall() delsql="delete from Rate where ID=%d" cur.execute(delsql %1) conn.commit() ④ conn.close()