?Python 常用庫之 psutil 使用指南

作者：古明地盆

楔子

Python 有一個(gè)第三方模塊：psutil，專門用來獲取操作系統(tǒng)以及硬件相關(guān)的信息，比如：CPU、磁盤、網(wǎng)絡(luò)、內(nèi)存等等。

首先我們要安裝，直接 pip install psutil 即可，安裝之后來看看它的用法。

CPU 相關(guān)

獲取 CPU 的邏輯數(shù)量

import?psutil

print(psutil.cpu_count())??#?12

獲取 CPU 的物理核心數(shù)量

import?psutil

print(psutil.cpu_count(logical=False))??#?6

結(jié)果為 6，說明是 6 核超線程；如果 CPU 的物理核心數(shù) 和 邏輯數(shù)相等，也為 12，則說明是 12 核非超線程。

統(tǒng)計(jì) CPU 的用戶／系統(tǒng)／空閑時(shí)間

import?psutil

print(psutil.cpu_times())?
#?scputimes(user=65531.796875,?system=42440.76562500023,?idle=1783904.3593749998,?interrupt=5676.375,?dpc=1846.609375)

#?psutil.cpu_times_percent()?功能與之類似,?只不過返回的比例

返回的是一個(gè) namedtuple，后面凡是結(jié)構(gòu)長的和這里類似的，都是 namedtuple。

查看 CPU 的使用率

import?psutil

for?x?in?range(3):
????# interval：表示每隔0.5s刷新一次
????# percpu：表示查看所有的cpu使用率
????print(psutil.cpu_percent(interval=0.5,?percpu=True))
"""
[6.1,?6.2,?9.4,?3.1,?0.0,?0.0,?0.0,?6.2,?3.1,?3.1,?3.1,?0.0]
[0.0,?0.0,?6.1,?0.0,?6.1,?3.0,?0.0,?3.0,?3.0,?3.0,?0.0,?9.1]
[0.0,?0.0,?6.2,?3.1,?3.1,?0.0,?3.1,?3.1,?3.1,?3.1,?0.0,?0.0]
"""
#?我這里cpu的邏輯數(shù)量是12,?所以每個(gè)列表里面有12個(gè)元素

查看 CPU 的統(tǒng)計(jì)信息，包括上下文切換、中斷、軟中斷，以及系統(tǒng)調(diào)用次數(shù)等等

import?psutil

print(psutil.cpu_stats())
#?scpustats(ctx_switches=2912990332,?interrupts=4290503758,?soft_interrupts=0,?syscalls=2698751096)

查看 CPU 的頻率

import?psutil

print(psutil.cpu_freq())??#?scpufreq(current=2208.0,?min=0.0,?max=2208.0)

內(nèi)存相關(guān)

查看內(nèi)存使用情況

import?psutil

print(psutil.virtual_memory())??
#?svmem(total=17029259264,?available=8437215232,?percent=50.5,?used=8592044032,?free=8437215232)

• total: 總內(nèi)存

• available: 可用內(nèi)存

• percent: 內(nèi)存使用率

• used: 已使用的內(nèi)存

查看交換內(nèi)存信息

import?psutil

print(psutil.swap_memory())
#?sswap(total=19579396096,?used=15708250112,?free=3871145984,?percent=80.2,?sin=0,?sout=0)

關(guān)于物理內(nèi)存和交換內(nèi)存之間的關(guān)系。

物理內(nèi)存：就是實(shí)際的內(nèi)存條提供的臨時(shí)數(shù)據(jù)存儲空間，在 Windows 上右鍵點(diǎn)擊計(jì)算機(jī)，再點(diǎn)擊屬性時(shí)，上面顯示的安裝內(nèi)存（RAM）就是電腦的物理內(nèi)存。這些內(nèi)存是實(shí)際存在的，在你不給機(jī)器增加內(nèi)存條的時(shí)候是不會改變的。

交換內(nèi)存：交換內(nèi)存是專門用來臨時(shí)存儲數(shù)據(jù)的，通常在頁面調(diào)度和交換進(jìn)程數(shù)據(jù)時(shí)使用。相當(dāng)于在進(jìn)行內(nèi)存整理的時(shí)候，會先把部分?jǐn)?shù)據(jù)放在硬盤的某個(gè)地方，類似我們整理衣柜，衣服一多直接整理會很麻煩，因此會先把部分衣服放在其他地方，等衣柜里的衣服整理完了再把放在其它地方的衣服拿回來。這個(gè)其他地方放在計(jì)算機(jī)中則代表硬盤的某個(gè)地方，也就是我們所說的交換區(qū)。通常當(dāng)使用交換內(nèi)存時(shí)，是因?yàn)槲锢韮?nèi)存不足，正所謂衣柜，如果足夠大的話就沒必要拿出部分衣服放在其它地方， 直接在衣柜里就能解決了。

虛擬內(nèi)存：首先，如果想要操作文件，可執(zhí)行程序等等，那么首先要把它們從磁盤上讀取到內(nèi)存中，因此 CPU 除了自己的那一部分小小的空間外，要想操作數(shù)據(jù)，只能操作內(nèi)存里的數(shù)據(jù)。但是當(dāng)內(nèi)存不夠了，那么便會在硬盤上開辟一份虛擬內(nèi)存，將物理內(nèi)存里的部分?jǐn)?shù)據(jù)放在虛擬內(nèi)存當(dāng)中。硬盤的空間很大，即使普通電腦安裝的固態(tài)硬盤也有一百個(gè) G，因此可以拿出一部分充當(dāng)虛擬內(nèi)存。不過虛擬內(nèi)存雖說是內(nèi)存，但畢竟在硬盤上，速度絕對和 CPU 直接從物理內(nèi)存里讀取數(shù)據(jù)的速度相差甚遠(yuǎn)。這也是為什么那些大型網(wǎng)站將經(jīng)常被訪問的一些數(shù)據(jù)放在 Redis 緩存里，而不是放在硬盤或者數(shù)據(jù)庫上。

磁盤相關(guān)

查看磁盤分區(qū)、磁盤使用率和磁盤 IO 信息

from?pprint?import?pprint
import?psutil

pprint(psutil.disk_partitions())
"""
[sdiskpart(device='C:\\',?mountpoint='C:\\',?fstype='NTFS',?opts='rw,fixed'),
?sdiskpart(device='D:\\',?mountpoint='D:\\',?fstype='NTFS',?opts='rw,fixed'),
?sdiskpart(device='E:\\',?mountpoint='E:\\',?fstype='NTFS',?opts='rw,fixed')]
"""
#?可以看到一共有三個(gè)盤符，fstype表示文件系統(tǒng)格式是NTFS，opts中的rw表示可讀寫
#?里面有一個(gè)參數(shù)?all,?默認(rèn)為?False,?如果指定為?True,?那么返回的內(nèi)容還會包含?/proc?等特殊文件系統(tǒng)的掛載信息
#?由于我這里是?Windows,?所以兩者沒區(qū)別

查看某個(gè)磁盤使用情況

import?psutil

print(psutil.disk_usage("C:\\"))
#?sdiskusage(total=267117391872,?used=88213196800,?free=178904195072,?percent=33.0)

查看磁盤 IO 統(tǒng)計(jì)信息

from?pprint?import?pprint
import?psutil

pprint(psutil.disk_io_counters())
#?sdiskio(read_count=1270037,?write_count=2146886,?read_bytes=34637616128,?write_bytes=53505994240,?read_time=551,?write_time=1258)

• read_count: 讀次數(shù)

• write_count: 寫次數(shù)

• read_bytes: 讀的字節(jié)數(shù)

• write_bytes: 寫的字節(jié)數(shù)

• read_time: 讀時(shí)間

• write_time: 寫時(shí)間

默認(rèn)返回的是所有磁盤加起來的統(tǒng)計(jì)信息，我們可以指定 perdisk=True，則分別列出每一個(gè)磁盤的統(tǒng)計(jì)信息。

from?pprint?import?pprint
import?psutil

pprint(psutil.disk_io_counters(perdisk=True))
"""
{'PhysicalDrive0':?sdiskio(read_count=1262459,?write_count=2149207,?read_bytes=34598280704,?write_bytes=53708976128,?read_time=532,?write_time=1261),
?'PhysicalDrive1':?sdiskio(read_count=7702,?write_count=98,?read_bytes=41695232,?write_bytes=4730880,?read_time=19,?write_time=0)}
"""

網(wǎng)絡(luò)相關(guān)

查看網(wǎng)卡的網(wǎng)絡(luò) IO 統(tǒng)計(jì)信息

from?pprint?import?pprint
import?psutil

pprint(psutil.net_io_counters())
"""
snetio(bytes_sent=536008958,?bytes_recv=8676204996,?packets_sent=2725499,?packets_recv=7225179,?errin=0,?errout=9,?dropin=0,?dropout=0)
"""
#?bytes_sent:?發(fā)送的字節(jié)數(shù)
#?bytes_recv:?接收的字節(jié)數(shù)
#?packets_sent:?發(fā)送的包數(shù)據(jù)量
#?packets_recv:?接收的包數(shù)據(jù)量
#?errin:?接收包時(shí),?出錯(cuò)的次數(shù)
#?errout:?發(fā)送包時(shí),?出錯(cuò)的次數(shù)
#?dropin:?接收包時(shí),?丟棄的次數(shù)
#?dropout:?發(fā)送包時(shí),?丟棄的次數(shù)


#?里面還有一個(gè)?pernic?參數(shù),?如果為?True,?則列出所有網(wǎng)卡的信息
pprint(psutil.net_io_counters(pernic=True))
"""
{'Loopback?Pseudo-Interface?1':?snetio(bytes_sent=0,?bytes_recv=0,?packets_sent=0,?packets_recv=0,?errin=0,?errout=0,?dropin=0,?dropout=0),
?'WLAN':?snetio(bytes_sent=534497477,?bytes_recv=8678905297,?packets_sent=2706204,?packets_recv=7244187,?errin=0,?errout=0,?dropin=0,?dropout=0),
?'以太網(wǎng)':?snetio(bytes_sent=0,?bytes_recv=0,?packets_sent=0,?packets_recv=0,?errin=0,?errout=0,?dropin=0,?dropout=0),
?'以太網(wǎng)?2':?snetio(bytes_sent=3612804,?bytes_recv=7955853,?packets_sent=32818,?packets_recv=26442,?errin=0,?errout=9,?dropin=0,?dropout=0),
?'本地連接*?2':?snetio(bytes_sent=0,?bytes_recv=0,?packets_sent=0,?packets_recv=0,?errin=0,?errout=0,?dropin=0,?dropout=0),
?'本地連接*?3':?snetio(bytes_sent=0,?bytes_recv=0,?packets_sent=0,?packets_recv=0,?errin=0,?errout=0,?dropin=0,?dropout=0),
?'藍(lán)牙網(wǎng)絡(luò)連接':?snetio(bytes_sent=0,?bytes_recv=0,?packets_sent=0,?packets_recv=0,?errin=0,?errout=0,?dropin=0,?dropout=0)}
"""

查看網(wǎng)絡(luò)接口信息

from?pprint?import?pprint
import?psutil

#?以字典的形式返回網(wǎng)卡的配置信息,?包括?IP?地址、Mac地址、子網(wǎng)掩碼、廣播地址等等
pprint(psutil.net_if_addrs())
"""
{'Loopback?Pseudo-Interface?1':?[snicaddr(family=<AddressFamily.AF_INET:?2>,?address='127.0.0.1',?netmask='255.0.0.0',?broadcast=None,?ptp=None),
?????????????????????????????????snicaddr(family=<AddressFamily.AF_INET6:?23>,?address='::1',?netmask=None,?broadcast=None,?ptp=None)],
?'WLAN':?[snicaddr(family=<AddressFamily.AF_LINK:?-1>,?address='04-EA-56-8C-36-24',?netmask=None,?broadcast=None,?ptp=None),
??????????snicaddr(family=<AddressFamily.AF_INET:?2>,?address='192.168.8.115',?netmask='255.255.255.0',?broadcast=None,?ptp=None),
??????????snicaddr(family=<AddressFamily.AF_INET6:?23>,?address='fd94:e9ee:f230:6e00:55c9:8d1e:f23d:3acc',?netmask=None,?broadcast=None,?ptp=None),
??????????snicaddr(family=<AddressFamily.AF_INET6:?23>,?address='fd94:e9ee:f230:6e00:dc07:1987:2395:d871',?netmask=None,?broadcast=None,?ptp=None),
??????????snicaddr(family=<AddressFamily.AF_INET6:?23>,?address='fe80::55c9:8d1e:f23d:3acc',?netmask=None,?broadcast=None,?ptp=None)],
?'以太網(wǎng)':?[snicaddr(family=<AddressFamily.AF_LINK:?-1>,?address='9C-7B-EF-15-FC-2F',?netmask=None,?broadcast=None,?ptp=None),
?????????snicaddr(family=<AddressFamily.AF_INET:?2>,?address='10.254.61.6',?netmask='255.255.255.0',?broadcast=None,?ptp=None),
?????????snicaddr(family=<AddressFamily.AF_INET:?2>,?address='169.254.54.71',?netmask='255.255.0.0',?broadcast=None,?ptp=None),
?????????snicaddr(family=<AddressFamily.AF_INET6:?23>,?address='fe80::4826:a6a6:b5f4:3647',?netmask=None,?broadcast=None,?ptp=None)],
?'以太網(wǎng)?2':?[snicaddr(family=<AddressFamily.AF_LINK:?-1>,?address='00-FF-B3-BA-07-AE',?netmask=None,?broadcast=None,?ptp=None),
???????????snicaddr(family=<AddressFamily.AF_INET:?2>,?address='2.0.1.32',?netmask='255.255.255.0',?broadcast=None,?ptp=None),
???????????snicaddr(family=<AddressFamily.AF_INET6:?23>,?address='fe80::cc21:26c6:9327:1355',?netmask=None,?broadcast=None,?ptp=None)],
?'本地連接*?2':?[snicaddr(family=<AddressFamily.AF_LINK:?-1>,?address='04-EA-56-8C-36-25',?netmask=None,?broadcast=None,?ptp=None),
?????????????snicaddr(family=<AddressFamily.AF_INET:?2>,?address='169.254.45.234',?netmask='255.255.0.0',?broadcast=None,?ptp=None),
?????????????snicaddr(family=<AddressFamily.AF_INET6:?23>,?address='fe80::d958:b3fe:ef3d:2dea',?netmask=None,?broadcast=None,?ptp=None)],
?'本地連接*?3':?[snicaddr(family=<AddressFamily.AF_LINK:?-1>,?address='06-EA-56-8C-36-24',?netmask=None,?broadcast=None,?ptp=None),
?????????????snicaddr(family=<AddressFamily.AF_INET:?2>,?address='169.254.41.166',?netmask='255.255.0.0',?broadcast=None,?ptp=None),
?????????????snicaddr(family=<AddressFamily.AF_INET6:?23>,?address='fe80::6474:c583:1626:29a6',?netmask=None,?broadcast=None,?ptp=None)],
?'藍(lán)牙網(wǎng)絡(luò)連接':?[snicaddr(family=<AddressFamily.AF_LINK:?-1>,?address='04-EA-56-8C-36-28',?netmask=None,?broadcast=None,?ptp=None),
????????????snicaddr(family=<AddressFamily.AF_INET:?2>,?address='169.254.135.205',?netmask='255.255.0.0',?broadcast=None,?ptp=None),
????????????snicaddr(family=<AddressFamily.AF_INET6:?23>,?address='fe80::5cbd:8913:7499:87cd',?netmask=None,?broadcast=None,?ptp=None)]}

"""

#?返回網(wǎng)卡的詳細(xì)信息,?包括是否啟動、通信類型、傳輸速度、mtu
pprint(psutil.net_if_stats())
"""
{'Loopback?Pseudo-Interface?1':?snicstats(isup=True,?duplex=<NicDuplex.NIC_DUPLEX_FULL:?2>,?speed=1073,?mtu=1500),
?'WLAN':?snicstats(isup=True,?duplex=<NicDuplex.NIC_DUPLEX_FULL:?2>,?speed=866,?mtu=1500),
?'以太網(wǎng)':?snicstats(isup=False,?duplex=<NicDuplex.NIC_DUPLEX_FULL:?2>,?speed=0,?mtu=1500),
?'以太網(wǎng)?2':?snicstats(isup=True,?duplex=<NicDuplex.NIC_DUPLEX_FULL:?2>,?speed=10,?mtu=1400),
?'本地連接*?2':?snicstats(isup=False,?duplex=<NicDuplex.NIC_DUPLEX_FULL:?2>,?speed=0,?mtu=1500),
?'本地連接*?3':?snicstats(isup=False,?duplex=<NicDuplex.NIC_DUPLEX_FULL:?2>,?speed=0,?mtu=1500),
?'藍(lán)牙網(wǎng)絡(luò)連接':?snicstats(isup=False,?duplex=<NicDuplex.NIC_DUPLEX_FULL:?2>,?speed=3,?mtu=1500)}
"""

查看當(dāng)前機(jī)器的網(wǎng)絡(luò)連接

from?pprint?import?pprint
import?psutil

#?以列表的形式返回每個(gè)網(wǎng)絡(luò)連接的詳細(xì)信息
#?里面接受一個(gè)參數(shù),?默認(rèn)是?"inet",?當(dāng)然我們也可以指定為其它,?比如?"tcp"
pprint(psutil.net_connections())
"""
[sconn(fd=-1,?family=,?type=,?laddr=addr(ip='0.0.0.0',?port=1024),?raddr=(),?status='LISTEN',?pid=940),
?sconn(fd=-1,?family=,?type=,?laddr=addr(ip='0.0.0.0',?port=5432),?raddr=(),?status='LISTEN',?pid=7620),
?sconn(fd=-1,?family=,?type=,?laddr=addr(ip='127.0.0.1',?port=10637),?raddr=addr(ip='127.0.0.1',?port=10638),?status='ESTABLISHED',?pid=10152),
?sconn(fd=-1,?family=,?type=,?laddr=addr(ip='127.0.0.1',?port=10613),?raddr=addr(ip='127.0.0.1',?port=10612),?status='ESTABLISHED',?pid=10152),
?sconn(fd=-1,?family=,?type=,?laddr=addr(ip='::',?port=5353),?raddr=(),?status='NONE',?pid=8820),
?sconn(fd=-1,?family=,?type=,?laddr=addr(ip='127.0.0.1',?port=54541),?raddr=(),?status='LISTEN',?pid=2908),
?sconn(fd=-1,?family=,?type=,?
?....
?....
?....
]
"""

#?是不是很方便呢??在?Linux?中有兩個(gè)命令可以做到這一點(diǎn),?netstat?和?ss
#?$?netstat?-nat
#?$?ss?-nat

#?但是在生產(chǎn)環(huán)境中,?線上服務(wù)器很多都是最小化安裝,?并不能保證每臺機(jī)器上都有?ss?或者?netstat?命令,?而這個(gè)時(shí)候?psutil?就派上用場了

查看當(dāng)前登錄的用戶信息

from?pprint?import?pprint
import?psutil

pprint(psutil.users())??
#?[suser(name='satori',?terminal=None,?host='0.0.0.0',?started=1609841661.0,?pid=None)]

• name: 用戶名

• terminal: 終端

• host: 主機(jī)地址

• started: 登錄時(shí)間

• pid: 進(jìn)程id

查看系統(tǒng)的啟動時(shí)間

from?pprint?import?pprint
import?psutil
import?datetime

pprint(psutil.boot_time())??#?1585282271.0
print(datetime.datetime.fromtimestamp(psutil.boot_time()))??#?2020-03-27?12:11:11

進(jìn)程管理

psutil 還提供了很多和進(jìn)程管理相關(guān)的功能函數(shù)，非常的豐富，我們來看一下。

查看當(dāng)前存在的所有進(jìn)程的 pid

from?pprint?import?pprint
import?psutil

pprint(psutil.pids())
"""
[0,
?4,
?144,
?512,
?536,
?632,
?640,
?664,
?696,
?768,
?776,
?...
?...
?...
]
"""

查看某個(gè)進(jìn)程是否存在

from?pprint?import?pprint
import?psutil

pprint(psutil.pid_exists(22333))??#?False
pprint(psutil.pid_exists(0))??#?True

返回所有進(jìn)程（Process）對象組成的迭代器

from?pprint?import?pprint
import?psutil

pprint(psutil.process_iter())??#?

根據(jù) pid 獲取一個(gè)進(jìn)程對應(yīng)的 Process 對象

from?pprint?import?pprint
import?psutil

pprint(psutil.Process(pid=0))??#?psutil.Process(pid=0,?name='System?Idle?Process',?started='2020-2-27?09:07:47')

獲取進(jìn)程相關(guān)的具體信息

我們說根據(jù) pid 可以獲取一個(gè)進(jìn)程對應(yīng)的 Process 對象，而這個(gè)對象里面包含了該進(jìn)程的全部信息。

?from?pprint?import?pprint
import?psutil

p?=?psutil.Process(pid=16948)

#?進(jìn)程名稱
print(p.name())?#?WeChat.exe

#?進(jìn)程的exe路徑
print(p.exe())?#?D:\WeChat\WeChat.exe

#?進(jìn)程的工作目錄
print(p.cwd())?#?D:\WeChat

#?進(jìn)程啟動的命令行
print(p.cmdline())?#?['D:\\WeChat\\WeChat.exe']

#?當(dāng)前進(jìn)程id
print(p.pid)?#?16948

#?父進(jìn)程id
print(p.ppid())?#?11700

#?父進(jìn)程
print(p.parent())?#?psutil.Process(pid=11700,?name='explorer.exe',?started='09:19:06')

#?子進(jìn)程列表
pprint(p.children())
"""
[psutil.Process(pid=17452,?name='WeChatWeb.exe',?started='09:21:02'),?
?psutil.Process(pid=16216,?name='WeChatApp.exe',?started='09:21:40'),?
?psutil.Process(pid=13452,?name='SogouCloud.exe',?started='09:22:14')]
"""

#?進(jìn)程狀態(tài)
print(p.status())?#?running

#?進(jìn)程用戶名
print(p.username())?#?LAPTOP-264ORES3\satori

#?進(jìn)程創(chuàng)建時(shí)間,返回時(shí)間戳
print(p.create_time())?#?1561775539.0

#?進(jìn)程終端
#?在windows上無法使用
try:
????print(p.terminal())
except?Exception?as?e:
????print(e)?#?'Process'?object?has?no?attribute?'terminal'

#?進(jìn)程使用的cpu時(shí)間
print(p.cpu_times())??#?pcputimes(user=133.3125,?system=188.203125,?children_user=0.0,?children_system=0.0)

#?進(jìn)程所使用的的內(nèi)存
print(p.memory_info())
"""
pmem(rss=128634880,?vms=117067776,?num_page_faults=12193918,?
?????peak_wset=263921664,?wset=128634880,?peak_paged_pool=1398584,?
?????paged_pool=1329936,?peak_nonpaged_pool=313896,?nonpaged_pool=152192,?
?????pagefile=117067776,?peak_pagefile=201670656,?private=117067776)
"""

#?進(jìn)程打開的文件
pprint(p.open_files())
"""
[popenfile(path='C:\\Users\\satori\\Documents\\WeChat?Files\\wxid_3ksrps1o47mf22\\Msg\\Media.db-wal',?fd=-1),
?popenfile(path='C:\\Users\\satori\\AppData\\Roaming\\Tencent\\WeChat\\All?Users\\CefResources\\2581\\qb_200_percent.pak',?fd=-1),
?popenfile(path='C:\\Users\\satori\\Documents\\WeChat?Files\\wxid_3ksrps1o47mf22\\Msg\\Multi\\MSG0.db-shm',?fd=-1),
?popenfile(path='C:\\Program?Files\\WindowsApps\\Microsoft.LanguageExperiencePackzh-CN_18362.28.87.0_neutral__8wekyb3d8bbwe\\Windows\\System32\\zh-CN\\dui70.dll.mui',?fd=-1),
?popenfile(path='C:\\Users\\satori\\Documents\\WeChat?Files\\wxid_3ksrps1o47mf22\\Msg\\Multi\\MediaMSG2.db-shm',?fd=-1),
?popenfile(path='C:\\Users\\satori\\Documents\\WeChat?Files\\wxid_3ksrps1o47mf22\\Msg\\Emotion.db-wal',?fd=-1),
?popenfile(path='C:\\Windows\\Fonts\\msyh.ttc',?fd=-1),
?......
?......
?......
?]
"""

#?進(jìn)程相關(guān)的網(wǎng)絡(luò)連接
pprint(p.connections())
"""
[pconn(fd=-1,?family=,?type=,?laddr=addr(ip='192.168.8.115',?port=5162),?raddr=addr(ip='183.3.234.107',?port=443),?status='ESTABLISHED'),
?pconn(fd=-1,?family=,?type=,?laddr=addr(ip='192.168.8.115',?port=13856),?raddr=addr(ip='61.151.168.204',?port=80),?status='CLOSE_WAIT'),
?pconn(fd=-1,?family=,?type=,?laddr=addr(ip='0.0.0.0',?port=8680),?raddr=(),?status='LISTEN')]
"""

#?進(jìn)程內(nèi)的線程數(shù)量，這個(gè)進(jìn)程開啟了多少個(gè)線程
print(p.num_threads())??#?66

#?這個(gè)進(jìn)程內(nèi)的所有線程信息
pprint(p.threads())
"""
[pthread(id=13340,?user_time=113.328125,?system_time=179.015625),
?pthread(id=17120,?user_time=0.0,?system_time=0.0625),
?pthread(id=7216,?user_time=0.15625,?system_time=0.515625),
?pthread(id=13360,?user_time=0.703125,?system_time=0.21875),
?pthread(id=10684,?user_time=0.015625,?system_time=0.078125),
?pthread(id=13552,?user_time=2.9375,?system_time=0.171875),
?pthread(id=12620,?user_time=0.265625,?system_time=0.296875),
?pthread(id=14492,?user_time=0.015625,?system_time=0.03125),
?pthread(id=14568,?user_time=0.0,?system_time=0.046875),
?pthread(id=17112,?user_time=0.015625,?system_time=0.0625),
?pthread(id=9344,?user_time=0.0,?system_time=0.015625),
?pthread(id=13544,?user_time=0.0,?system_time=0.0),
?pthread(id=10028,?user_time=0.078125,?system_time=0.125),
?pthread(id=4920,?user_time=0.015625,?system_time=0.0625),
?pthread(id=5744,?user_time=0.0,?system_time=0.015625),
?pthread(id=7044,?user_time=0.0,?system_time=0.0),
?pthread(id=14064,?user_time=0.0,?system_time=0.0),
?pthread(id=11916,?user_time=0.0,?system_time=0.0),
?pthread(id=1316,?user_time=0.0,?system_time=0.0),
?pthread(id=18100,?user_time=0.0,?system_time=0.0),
?pthread(id=2992,?user_time=0.0,?system_time=0.0),
?pthread(id=8956,?user_time=0.0,?system_time=0.0),
?pthread(id=8588,?user_time=0.03125,?system_time=0.03125),
?pthread(id=3944,?user_time=0.0,?system_time=0.03125),
?pthread(id=15828,?user_time=0.0,?system_time=0.015625),
?pthread(id=7348,?user_time=0.0,?system_time=0.03125),
?pthread(id=3400,?user_time=0.0,?system_time=0.015625),
?pthread(id=8628,?user_time=0.0,?system_time=0.0),
?pthread(id=2400,?user_time=0.0,?system_time=0.0),
?pthread(id=9432,?user_time=1.28125,?system_time=0.171875),
?pthread(id=11544,?user_time=0.0,?system_time=0.015625),
?pthread(id=12348,?user_time=2.96875,?system_time=3.78125),
?pthread(id=3444,?user_time=0.0,?system_time=0.0),
?pthread(id=17476,?user_time=0.0,?system_time=0.0),
?pthread(id=15856,?user_time=0.0,?system_time=0.015625),
?pthread(id=12248,?user_time=0.0,?system_time=0.0),
?pthread(id=17280,?user_time=0.0,?system_time=0.0),
?......
?......
?......
?]
"""

#?進(jìn)程的環(huán)境變量
pprint(p.environ())
"""
{'ALLUSERSPROFILE':?'C:\\ProgramData',
?'APPDATA':?'C:\\Users\\satori\\AppData\\Roaming',
?'COMMONPROGRAMFILES':?'C:\\Program?Files?(x86)\\Common?Files',
?'COMMONPROGRAMFILES(X86)':?'C:\\Program?Files?(x86)\\Common?Files',
?'COMMONPROGRAMW6432':?'C:\\Program?Files\\Common?Files',
?'COMPUTERNAME':?'LAPTOP-264ORES3',
?'COMSPEC':?'C:\\WINDOWS\\system32\\cmd.exe',
?'DRIVERDATA':?'C:\\Windows\\System32\\Drivers\\DriverData',
?'GOPATH':?'C:\\Users\\satori\\go',
?'HOMEDRIVE':?'C:',
?'HOMEPATH':?'\\Users\\satori',
?'LOCALAPPDATA':?'C:\\Users\\satori\\AppData\\Local',
?'LOGONSERVER':?'\\\\LAPTOP-264ORES3',
?'NUMBER_OF_PROCESSORS':?'12',
?'ONEDRIVE':?'C:\\Users\\satori\\OneDrive',
?'ONEDRIVECONSUMER':?'C:\\Users\\satori\\OneDrive',
?'ONLINESERVICES':?'Online?Services',
?'OS':?'Windows_NT',
?'PATH':?'C:\\Program?Files?(x86)\\Intel\\Intel(R)?Management?Engine?'
?????????'Components\\iCLS\\;C:\\Program?Files\\Intel\\Intel(R)?Management?'
?????????'Engine?'
?????????'Components\\iCLS\\;C:\\windows\\system32;C:\\windows;C:\\windows\\System32\\Wbem;C:\\windows\\System32\\WindowsPowerShell\\v1.0\\;C:\\windows\\System32\\OpenSSH\\;C:\\Program?'
?????????'Files?(x86)\\Intel\\Intel(R)?Management?Engine?'
?????????'Components\\DAL;C:\\Program?Files\\Intel\\Intel(R)?Management?Engine?'
?????????'Components\\DAL;C:\\Program?Files?(x86)\\NVIDIA?'
?????????'Corporation\\PhysX\\Common;C:\\Program?'
?????????'Files\\Intel\\WiFi\\bin\\;C:\\Program?Files\\Common?'
?????????'Files\\Intel\\WirelessCommon\\;C:\\python37;c:\\python37\\Scripts;C:\\Program?'
?????????'Files\\Git\\cmd;E:\\instantclient_10_2;C:\\Program?'
?????????'Files\\Redis\\;D:\\ffmpeg\\bin;C:\\WINDOWS\\system32;C:\\WINDOWS;C:\\WINDOWS\\System32\\Wbem;C:\\WINDOWS\\System32\\WindowsPowerShell\\v1.0\\;C:\\WINDOWS\\System32\\OpenSSH\\;C:\\Go\\bin;C:\\MingW\\bin;C:\\Users\\satori\\.cargo\\bin;C:\\python37\\Scripts\\;C:\\python37\\;C:\\python38\\Scripts\\;C:\\python38\\;C:\\Users\\satori\\AppData\\Local\\Microsoft\\WindowsApps;C:\\Users\\satori\\go\\bin',
?'PATHEXT':?'.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC',
?'PLATFORMCODE':?'AN',
?'PROCESSOR_ARCHITECTURE':?'x86',
?'PROCESSOR_ARCHITEW6432':?'AMD64',
?'PROCESSOR_IDENTIFIER':?'Intel64?Family?6?Model?158?Stepping?10,?GenuineIntel',
?'PROCESSOR_LEVEL':?'6',
?'PROCESSOR_REVISION':?'9e0a',
?'PROGRAMDATA':?'C:\\ProgramData',
?'PROGRAMFILES':?'C:\\Program?Files?(x86)',
?'PROGRAMFILES(X86)':?'C:\\Program?Files?(x86)',
?'PROGRAMW6432':?'C:\\Program?Files',
?'PSMODULEPATH':?'C:\\Program?'
?????????????????'Files\\WindowsPowerShell\\Modules;C:\\WINDOWS\\system32\\WindowsPowerShell\\v1.0\\Modules',
?'PUBLIC':?'C:\\Users\\Public',
?'REGIONCODE':?'APJ',
?'SESSIONNAME':?'Console',
?'SYSTEMDRIVE':?'C:',
?'SYSTEMROOT':?'C:\\WINDOWS',
?'TBS_CONTENT_MAIN_RUNNER_INITIALIZED':?'1',
?'TEMP':?'C:\\Users\\satori\\AppData\\Local\\Temp',
?'TMP':?'C:\\Users\\satori\\AppData\\Local\\Temp',
?'USERDOMAIN':?'LAPTOP-264ORES3',
?'USERDOMAIN_ROAMINGPROFILE':?'LAPTOP-264ORES3',
?'USERNAME':?'satori',
?'USERPROFILE':?'C:\\Users\\satori',
?'VS140COMNTOOLS':?'C:\\Program?Files?(x86)\\Microsoft?Visual?Studio?'
???????????????????'14.0\\Common7\\Tools\\',
?'WINDIR':?'C:\\WINDOWS',
?'WXDRIVE_START_ARGS':?'--wxdrive-setting=0?--disable-gpu?'
???????????????????????'--disable-software-rasterizer?'
???????????????????????'--enable-features=NetworkServiceInProcess'}
"""

#?結(jié)束進(jìn)程,?返回?None,?執(zhí)行之后微信就會被強(qiáng)制關(guān)閉,?當(dāng)然這里就不試了
#?print(p.terminal())??#?None

我們還可以調(diào)用 psutil.test 來模擬 ps 命令。

import?psutil

psutil.test()
"""
USER?????????PID??%MEM?????VSZ?????RSS??NICE?STATUS??START???TIME??CMDLINE
SYSTEM?????????0???0.0???60.0K????8.0K????????runni??Dec30??00:39??System?Idle?P
SYSTEM?????????4???0.0??236.0K????1.4M????????runni??Dec30??14:32??System
?????????????144???0.2????8.1M???32.2M????????runni??Dec30??00:03??Registry
?????????????512???0.0????1.1M??304.0K????????runni??Dec30??00:00??smss.exe
?????????????536???0.0??912.0K????1.0M????????runni??Dec30??00:00??svchost.exe
?????????????632???0.1???13.0M???15.0M????????runni??Dec30??00:29??svchost.exe
?????????????640???0.0????2.1M????1.3M????????runni??Dec30??00:00??fontdrvhost.e
satori???????664???0.1???26.1M???17.1M????32??runni??09:19??00:02??C:\WINDOWS\Sy
?????????????696???0.0????6.7M????3.8M????????runni??Dec30??00:04??WUDFHost.exe
?????????????768???0.0????1.9M????1.9M????????runni??Dec30??00:26??csrss.exe
......................
......................
......................
......................
......................
"""

它是怎么做的呢？還記得我們之前說的 process_iter 嗎？會返回所有進(jìn)程的 Process 對象，直接依次輸出里面的信息即可。同理，我們也可以通過 process_iter 找到某一個(gè)進(jìn)程對應(yīng)的進(jìn)程 id。

import?psutil

for?prcs?in?psutil.process_iter():
????if?prcs.name().lower()?==?"wechat.exe":
????????print(prcs.pid)
"""
16948
"""

#?有了這個(gè)騷操作之后，我們便可以通過進(jìn)程?id?找到對應(yīng)的進(jìn)程
#?然后修改里面的數(shù)據(jù)

小結(jié)

總的來說，這個(gè)庫是非常強(qiáng)大的，很好用，可以獲取很多底層的信息。