[Python Study Notes]磁盘信息和IO性能

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>>文件: 磁盘信息.py

>>作者: liu yang

>>邮箱: liuyang0001@outlook.com

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#!/usr/bin/env python

# -*- coding: utf-8 -*-

import sys,os

import psutil

from time import sleep

'''判断平台'''

def platform_judge():

    # 将平台信息小写返回

    platform=sys.platform.lower()

    return platform

'''将bytes数转换成更加直观的符号显示'''

def bytes2symbols(bytes_value):

    '''单位符号'''

    symbols = ('K' ,'M', 'G', 'T', 'P', 'E', 'Z', 'Y')

    '''每个单位对应的bytes数的字典,先定义为空'''

    prefix={}

    '''要得到这样的{K:1024, M:1024*1024,G:1024**3},进行for循环'''

    for i,s in enumerate(symbols):

        # '''enumerate()为列举函数'''

        # '''i:代表下标'''

        # '''s:代表改下标对应的值'''

        # '''取到符号元组的值,作为prfix字典的key,根据key给value进行赋值'''

        prefix[s]=1024**(i+1)

    # '''打印得到的对应字典'''

    # print(prefix)

    symbols_value=0

    symbol=''

    # '''循环prefix字典,得到转换值'''

    for key,value in prefix.items():

        if bytes_value >=value :

            symbols_value=bytes_value/value

            symbol=key

        # 如果不满足最小的KB,则以B显示

        elif bytes_value <1024:

            return  '%0.2fB'%bytes_value

        # '''返回转换值(str)'''

    return  '%0.2f%sB'%(symbols_value,symbol)

'''实时io速率显示'''

def disk_io_message():

    t1 = psutil.disk_io_counters()

    sleep(1)

    '''判断平台,命令清屏'''

    if platform_judge()=='linux':

        os.system('clear')

    else:

        os.system('cls')

    t2 = psutil.disk_io_counters()

    read_bytes = bytes2symbols(t2.read_bytes - t1.read_bytes)

    write_bytes = bytes2symbols(t2.write_bytes - t1.write_bytes)

    # tps

    tps = t2.read_count + t2.write_count - t1.read_count - t1.write_count

    print('读/s:%10s'%read_bytes)

    print('写/s:%10s'%write_bytes)

    print('Tps:%10d'%tps)

'''磁盘分区信息显示'''

def disk_partitions():

    # 得到磁盘详细信息的列表

    disks=psutil.disk_partitions()

    # 循环列表,打印

    for disk in disks:

        print('%s %6s %10s'%(disk.device,disk.fstype,disk.opts))

if __name__ == '__main__':

    # platform=platform_judge()

    # value=bytes2symbols(1025)

    # print(value)

    # print(platform)

    while True:

        disk_io_message()

    # 磁盘分区信息

    # disk_partitions()

    # io实时性能信息

    # disk_io_message()