Python基础知识（28）：常用第三方模块

一、Pillow

PIL（Python Imaging Library）：提供了强大的图像操作功能，可以通过简单的代码完成复杂的图像处理，是Python平台事实上的图像处理库，支持Python 2.7以及更低的版本

Pillow：在PIL基础上创建的兼容版本，同时加入了更多新特性，支持Python 3.x

1、安装Pillow

如果安装了Anaconda，Pillow就已经可用了。否则，需要在命令行下通过pip安装

2、操作图像

（1）图像缩放

from PIL import Image

#在当前路径下，打开一个jpg图像文件
im = Image.open(\'test.jpg\')
#获得图像尺寸
w, h = im.size
print(\'Original image size: %sx%s\' % (w, h))
#缩放50%
im.thumbnail((w//2, h//2))
print(\'Resize image to: %sx%s\' % (w//2, h//2))
#把缩放后的图像用jpeg格式保存
im.save(\'thumbnail.jpg\', \'jpeg\')

结果：
Original image size: 1000x1000
Resize image to: 500x500

（2）模糊效果

from PIL import Image, ImageFilter

# 打开一个jpg图像文件，注意是当前路径:
im = Image.open(\'test.jpg\')
# 应用模糊滤镜:
im2 = im.filter(ImageFilter.GaussianBlur)
im2.save(\'blur.jpg\', \'jpeg\')

效果如下：

$\"\"$

（3）生成字母验证码

from PIL import Image, ImageDraw, ImageFont, ImageFilter
import os
import random
#随机字母
def rndChar():
    return chr(random.randint(65, 90))
#随机颜色1：
def rndColor():
    return (random.randint(64, 255), random.randint(64, 255), random.randint(64, 255))
#随机颜色2：
def rndColor2():
    return (random.randint(32, 127), random.randint(32, 127), random.randint(32, 127))
#240 x 60：
width = 60 * 4
height = 60
image = Image.new(\'RGB\', (width, height), (255,255,255))
#创建Font对象
#font = ImageFont.truetype(\'Arial.ttf\', 36)
font = ImageFont.truetype(\'arial.ttf\', 36)
#创建Draw对象：
draw = ImageDraw.Draw(image)
#填充每个像素：
for x in range(width):
    for y in range(height):
        draw.point((x, y), fill=rndColor())
#输出文字：
for t in range(4):
    draw.text((60 * t + 10, 10), rndChar(), font=font, fill=rndColor2())
#模糊：
image = image.filter(ImageFilter.BLUR)
image.save(\'code.jpg\', \'jpeg\')

验证码：

$\"\"$

二、requests

用于访问网络资源，处理URL资源时比urllib模块更方便

1、安装requests

如果安装了Anaconda，requests就已经可用了。否则，需要在命令行下通过pip安装

2、使用requests

（1）通过GET访问一个页面

>>> import requests
>>> r = requests.get(\'https://www.douban.com/\') # 豆瓣首页
>>> r.status_code
200
>>> r.text
r.text
\'<!DOCTYPE HTML>\\n<html>\\n<head>\\n<  name=\"de ion\" content=\"提供图书、电影、音乐唱片的推荐、评论和...\'

（2）发送POST请求

发送POST请求，只需要把get()方法变成post()，然后传入data参数作为POST请求的数据

r = requests.post(\'https://accounts.douban.com/login\', data={\'form_email\': \'abc@example.com\', \'form_password\': \'123456\'})

三、chardet

检测编码，处理不规范的第三方网页时，在不知道编码的情况下可以用chardet，获取编码后在转为str，方便后续处理

（1）安装chardet

如果安装了Anaconda，chardet就已经可用了。否则，需要在命令行下通过pip安装

（2）使用chardet

用chardet检测编码

import chardet
s = chardet.detect(b\'Hello,world!\')
print(s)

结果：
{\'encoding\': \'ascii\', \'confidence\': 1.0, \'language\': \'\'}
检测出的编码是ascii，注意到还有个confidence字段，表示检测的概率是1.0（即100%）

检测GBK编码的中文

import chardet
data = \'人生苦短，我学Python\'.encode(\'gbk\')
s = chardet.detect(data)
print(s)

结果：
{\'encoding\': \'GB2312\', \'confidence\': 0.99, \'language\': \'Chinese\'}

对日文进行检测

import chardet
#新的一天开始了,要好好加油哦
data = \'新しい一日が始まったから、頑張ってね\'.encode(\'euc-jp\')
s = chardet.detect(data)
print(s)

结果：
{\'encoding\': \'EUC-JP\', \'confidence\': 1.0, \'language\': \'Japanese\'}

ardet支持检测中文、日文、韩文等多种语言

四、psutil

在Python中获取系统信息，可以跨平台使用，支持Linux／UNIX／OSX／Windows等，是系统管理员和运维人员不可或缺的必备模块

（1）安装psutil

如果安装了Anaconda，psutil就已经可用了。否则，需要在命令行下通过pip安装

（2）获取CPU信息

获取CPU信息

import psutil
a = psutil.cpu_count()#CPU逻辑数量
b = psutil.cpu_count(logical=False)#CPU物理核心
print(a)
print(b)

结果：
4
4

统计CPU的用户／系统／空闲时间

import psutil
a = psutil.cpu_times()
print(a)

结果：
scputimes(user=41360.28125, system=27004.4375, idle=268042.21875, interrupt=656.4062576293945, dpc=835.3125014305115)

再实现类似top命令的CPU使用率，每秒刷新一次，累计10次

import psutil
for x in range(10):
    a = psutil.cpu_percent(interval=1, percpu=True)
    print(a)

结果：
[40.6, 28.1, 31.2, 24.6]
[46.9, 32.8, 42.2, 43.8]
[31.8, 31.2, 28.1, 28.1]
[58.2, 56.9, 57.8, 56.2]
[38.2, 40.6, 43.8, 34.9]
[44.6, 51.6, 46.9, 40.9]
[34.3, 32.3, 34.4, 25.0]
[34.3, 32.3, 32.8, 17.2]
[39.4, 42.2, 32.8, 34.4]
[57.6, 67.2, 64.1, 54.7

（3）获取内存信息

使用psutil获取物理内存和交换内存信息

import psutil
a = psutil.virtual_memory()
b = psutil.swap_memory()
print(a)
print(b)

结果：
svmem(total=3679428608, available=730165248, percent=80.2, used=2949263360, free=730165248)
sswap(total=6778257408, used=5174353920, free=1603903488, percent=76.3, sin=0, sout=0)

（4）获取磁盘信息

通过psutil获取磁盘分区、磁盘使用率和磁盘IO信息

import psutil
#磁盘分区信息
a = psutil.disk_partitions()
#磁盘使用情况
b = psutil.disk_usage(\'/\')
#磁盘IO
c = psutil.disk_io_counters()
print(a)
print(b)
print(c)

结果：
[sdiskpart(device=\'C:\\\\\', mountpoint=\'C:\\\\\', fstype=\'NTFS\', opts=\'rw,fixed\'), sdiskpart(device=\'D:\\\\\', mountpoint=\'D:\\\\\', fstype=\'NTFS\', opts=\'rw,fixed\')]
sdiskusage(total=378581020672, used=107236286464, free=271344734208, percent=28.3)
sdiskio(read_count=1813882, write_count=639951, read_bytes=59520503808, write_bytes=27710433792, read_time=58003, write_time=10482)

（5）获取网络信息

psutil可以获取网络接口和网络连接信息

import psutil
#获取网络读写字节/包的个数
a = psutil.net_io_counters()
#获取网络接口信息
b = psutil.net_if_addrs()
#获取网络接口状态
c = psutil.net_if_stats()
print(a)
print(b)
print(c)

结果：
snetio(bytes_sent=118923812, bytes_recv=1100353188, packets_sent=513738, packets_recv=122094, errin=0, errout=0, dropin=0, dropout=0)
{\'WLAN\': [snic(family=<AddressFamily.AF_ : -1>, address=\'74-DF-BF-5E-C3-29\', netmask=None, broadcast=None, ptp=None), snic(family=<AddressFamily.AF_INET: 2>, address=\'169.254.55.6\', netmask=\'255.255.0.0\', broadcast=None, ptp=None), snic(family=<AddressFamily.AF_INET6: 23>, address=\'fe80::b122:21:c891:3706\', netmask=None, broadcast=None, ptp=None)], \'本地连接* 3\': [snic(family=<AddressFamily.AF_ : -1>, address=\'76-DF-BF-5E-C3-29\', netmask=None, broadcast=None, ptp=None), snic(family=<AddressFamily.AF_INET: 2>, address=\'169.254.253.30\', netmask=\'255.255.0.0\', broadcast=None, ptp=None), snic(family=<AddressFamily.AF_INET6: 23>, address=\'fe80::d064:e706:8cee:fd1e\', netmask=None, broadcast=None, ptp=None)], \'本地连接* 4\': [snic(family=<AddressFamily.AF_ : -1>, address=\'86-DF-BF-5E-C3-29\', netmask=None, broadcast=None, ptp=None), snic(family=<AddressFamily.AF_INET: 2>, address=\'169.254.231.149\', netmask=\'255.255.0.0\', broadcast=None, ptp=None), snic(family=<AddressFamily.AF_INET6: 23>, address=\'fe80::6d45:5ace:6385:e795\', netmask=None, broadcast=None, ptp=None)], \'以太网\': [snic(family=<AddressFamily.AF_ : -1>, address=\'54-EE-75-A4-F6-66\', netmask=None, broadcast=None, ptp=None), snic(family=<AddressFamily.AF_INET: 2>, address=\'192.168.96.168\', netmask=\'255.255.255.0\', broadcast=None, ptp=None), snic(family=<AddressFamily.AF_INET6: 23>, address=\'fe80::94c9:c414:29e2:897\', netmask=None, broadcast=None, ptp=None)], \'VMware Network Adapter VMnet1\': [snic(family=<AddressFamily.AF_ : -1>, address=\'00-50-56-C0-00-01\', netmask=None, broadcast=None, ptp=None), snic(family=<AddressFamily.AF_INET: 2>, address=\'192.168.15.1\', netmask=\'255.255.255.0\', broadcast=None, ptp=None), snic(family=<AddressFamily.AF_INET6: 23>, address=\'fe80::d07c:26c3:1b0:674d\', netmask=None, broadcast=None, ptp=None)], \'VMware Network Adapter VMnet2\': [snic(family=<AddressFamily.AF_ : -1>, address=\'00-50-56-C0-00-02\', netmask=None, broadcast=None, ptp=None), snic(family=<AddressFamily.AF_INET: 2>, address=\'192.168.2.1\', netmask=\'255.255.255.0\', broadcast=None, ptp=None), snic(family=<AddressFamily.AF_INET6: 23>, address=\'fe80::55fc:e8e8:e0f4:54ed\', netmask=None, broadcast=None, ptp=None)], \'Loopback Pseudo-Interface 1\': [snic(family=<AddressFamily.AF_INET: 2>, address=\'127.0.0.1\', netmask=\'255.0.0.0\', broadcast=None, ptp=None), snic(family=<AddressFamily.AF_INET6: 23>, address=\'::1\', netmask=None, broadcast=None, ptp=None)]}
{\'以太网\': snicstats(isup=True, duplex=<NicDuplex.NIC_DUPLEX_FULL: 2>, speed=100, mtu=1500), \'VMware Network Adapter VMnet1\': snicstats(isup=True, duplex=<NicDuplex.NIC_DUPLEX_FULL: 2>, speed=100, mtu=1500), \'VMware Network Adapter VMnet2\': snicstats(isup=True, duplex=<NicDuplex.NIC_DUPLEX_FULL: 2>, speed=100, mtu=1500), \'Loopback Pseudo-Interface 1\': snicstats(isup=True, duplex=<NicDuplex.NIC_DUPLEX_FULL: 2>, speed=1073, mtu=1500), \'WLAN\': snicstats(isup=False, duplex=<NicDuplex.NIC_DUPLEX_FULL: 2>, speed=0, mtu=1500), \'本地连接* 3\': snicstats(isup=False, duplex=<NicDuplex.NIC_DUPLEX_FULL: 2>, speed=0, mtu=1500), \'本地连接* 4\': snicstats(isup=False, duplex=<NicDuplex.NIC_DUPLEX_FULL: 2>, speed=0, mtu=1500)}

获取当前网络连接信息

import psutil
a = psutil.net_connections()
print(a)

结果：
[sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=2, laddr=addr(ip=\'::\', port=500), raddr=(), status=\'NONE\', pid=1740), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'0.0.0.0\', port=443), raddr=(), status=\'LISTEN\', pid=4668), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'127.0.0.1\', port=59978), raddr=addr(ip=\'127.0.0.1\', port=59977), status=\'ESTABLISHED\', pid=11376), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'127.0.0.1\', port=59980), raddr=addr(ip=\'127.0.0.1\', port=59979), status=\'ESTABLISHED\', pid=11376), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'192.168.15.1\', port=2177), raddr=(), status=\'NONE\', pid=7540), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'0.0.0.0\', port=49676), raddr=(), status=\'LISTEN\', pid=868), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'0.0.0.0\', port=64843), raddr=(), status=\'NONE\', pid=3184), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'192.168.15.1\', port=138), raddr=(), status=\'NONE\', pid=4), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'192.168.96.168\', port=62610), raddr=addr(ip=\'23.217.125.240\', port=80), status=\'TIME_WAIT\', pid=0), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'0.0.0.0\', port=6682), raddr=(), status=\'NONE\', pid=2836), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'0.0.0.0\', port=64831), raddr=(), status=\'NONE\', pid=6916), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'0.0.0.0\', port=60003), raddr=(), status=\'LISTEN\', pid=11376), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'127.0.0.1\', port=59979), raddr=addr(ip=\'127.0.0.1\', port=59980), status=\'ESTABLISHED\', pid=11376), sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=2, laddr=addr(ip=\'fe80::94c9:c414:29e2:897\', port=2177), raddr=(), status=\'NONE\', pid=7540), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'0.0.0.0\', port=445), raddr=(), status=\'LISTEN\', pid=4), sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=2, laddr=addr(ip=\'fe80::55fc:e8e8:e0f4:54ed\', port=2177), raddr=(), status=\'NONE\', pid=7540), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'127.0.0.1\', port=6942), raddr=(), status=\'LISTEN\', pid=11376), sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=1, laddr=addr(ip=\'::\', port=49665), raddr=(), status=\'LISTEN\', pid=1260), sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=2, laddr=addr(ip=\'::\', port=5355), raddr=(), status=\'NONE\', pid=1924), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'0.0.0.0\', port=135), raddr=(), status=\'LISTEN\', pid=1080), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'0.0.0.0\', port=56480), raddr=(), status=\'NONE\', pid=2836), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'192.168.96.168\', port=138), raddr=(), status=\'NONE\', pid=4), sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=1, laddr=addr(ip=\'::1\', port=8307), raddr=(), status=\'LISTEN\', pid=4668), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'192.168.15.1\', port=139), raddr=(), status=\'LISTEN\', pid=4), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'0.0.0.0\', port=80), raddr=(), status=\'LISTEN\', pid=4), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'0.0.0.0\', port=6666), raddr=(), status=\'NONE\', pid=2836), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'192.168.96.168\', port=2177), raddr=(), status=\'NONE\', pid=7540), sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=1, laddr=addr(ip=\'::\', port=49676), raddr=(), status=\'LISTEN\', pid=868), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'127.0.0.1\', port=59977), raddr=addr(ip=\'127.0.0.1\', port=59978), status=\'ESTABLISHED\', pid=11376), sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=1, laddr=addr(ip=\'::\', port=443), raddr=(), status=\'LISTEN\', pid=4668), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'192.168.96.168\', port=62634), raddr=addr(ip=\'223.202.62.231\', port=443), status=\'SYN_SENT\', pid=4740), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'0.0.0.0\', port=49665), raddr=(), status=\'LISTEN\', pid=1260), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'192.168.96.168\', port=56309), raddr=addr(ip=\'113.96.232.146\', port=8080), status=\'ESTABLISHED\', pid=11164), sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=2, laddr=addr(ip=\'::\', port=4500), raddr=(), status=\'NONE\', pid=1740), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'127.0.0.1\', port=60281), raddr=addr(ip=\'127.0.0.1\', port=60280), status=\'ESTABLISHED\', pid=4668), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'127.0.0.1\', port=63342), raddr=(), status=\'LISTEN\', pid=11376), sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=2, laddr=addr(ip=\'fe80::d07c:26c3:1b0:674d\', port=2177), raddr=(), status=\'NONE\', pid=7540), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'0.0.0.0\', port=28653), raddr=(), status=\'LISTEN\', pid=11164), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'0.0.0.0\', port=49664), raddr=(), status=\'LISTEN\', pid=736), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'0.0.0.0\', port=912), raddr=(), status=\'LISTEN\', pid=3204), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'0.0.0.0\', port=59214), raddr=(), status=\'NONE\', pid=11164), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'0.0.0.0\', port=59005), raddr=(), status=\'NONE\', pid=2784), sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=1, laddr=addr(ip=\'::\', port=445), raddr=(), status=\'LISTEN\', pid=4), sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=1, laddr=addr(ip=\'::\', port=135), raddr=(), status=\'LISTEN\', pid=1080), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'0.0.0.0\', port=5050), raddr=(), status=\'NONE\', pid=1652), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'127.0.0.1\', port=8307), raddr=(), status=\'LISTEN\', pid=4668), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'127.0.0.1\', port=21440), raddr=(), status=\'LISTEN\', pid=12916), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'192.168.96.168\', port=137), raddr=(), status=\'NONE\', pid=4), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'0.0.0.0\', port=49667), raddr=(), status=\'LISTEN\', pid=2384), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'192.168.96.168\', port=62616), raddr=addr(ip=\'120.55.34.37\', port=443), status=\'TIME_WAIT\', pid=0), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'192.168.96.168\', port=139), raddr=(), status=\'LISTEN\', pid=4), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'192.168.96.168\', port=56248), raddr=addr(ip=\'1.192.193.180\', port=80), status=\'ESTABLISHED\', pid=6916), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'192.168.96.168\', port=62632), raddr=addr(ip=\'59.37.97.23\', port=443), status=\'ESTABLISHED\', pid=11164), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'192.168.96.168\', port=55965), raddr=addr(ip=\'113.96.208.198\', port=8080), status=\'ESTABLISHED\', pid=11352), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'192.168.2.1\', port=137), raddr=(), status=\'NONE\', pid=4), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'0.0.0.0\', port=5355), raddr=(), status=\'NONE\', pid=1924), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'0.0.0.0\', port=49668), raddr=(), status=\'LISTEN\', pid=896), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'0.0.0.0\', port=5040), raddr=(), status=\'LISTEN\', pid=1652), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'192.168.15.1\', port=137), raddr=(), status=\'NONE\', pid=4), sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=1, laddr=addr(ip=\'::\', port=80), raddr=(), status=\'LISTEN\', pid=4), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'127.0.0.1\', port=60280), raddr=addr(ip=\'127.0.0.1\', port=60281), status=\'ESTABLISHED\', pid=4668), sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=1, laddr=addr(ip=\'::\', port=49667), raddr=(), status=\'LISTEN\', pid=2384), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'127.0.0.1\', port=59018), raddr=(), status=\'NONE\', pid=1740), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'0.0.0.0\', port=4500), raddr=(), status=\'NONE\', pid=1740), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'0.0.0.0\', port=64766), raddr=(), status=\'NONE\', pid=2784), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'0.0.0.0\', port=3600), raddr=(), status=\'NONE\', pid=6916), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'192.168.2.1\', port=139), raddr=(), status=\'LISTEN\', pid=4), sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=2, laddr=addr(ip=\'::\', port=5353), raddr=(), status=\'NONE\', pid=1924), sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=1, laddr=addr(ip=\'::\', port=49668), raddr=(), status=\'LISTEN\', pid=896), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'0.0.0.0\', port=500), raddr=(), status=\'NONE\', pid=1740), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'192.168.2.1\', port=2177), raddr=(), status=\'NONE\', pid=7540), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'192.168.96.168\', port=56353), raddr=addr(ip=\'180.163.238.166\', port=80), status=\'ESTABLISHED\', pid=6916), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'0.0.0.0\', port=53088), raddr=(), status=\'NONE\', pid=2836), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'192.168.96.168\', port=56004), raddr=addr(ip=\'52.230.80.159\', port=443), status=\'ESTABLISHED\', pid=1740), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'192.168.2.1\', port=138), raddr=(), status=\'NONE\', pid=4), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'192.168.96.168\', port=56051), raddr=addr(ip=\'104.78.72.7\', port=443), status=\'CLOSE_WAIT\', pid=2800), sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=1, laddr=addr(ip=\'::\', port=49664), raddr=(), status=\'LISTEN\', pid=736), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'127.0.0.1\', port=21441), raddr=(), status=\'LISTEN\', pid=12916), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'0.0.0.0\', port=5353), raddr=(), status=\'NONE\', pid=1924), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'192.168.96.168\', port=62623), raddr=addr(ip=\'120.55.34.37\', port=443), status=\'TIME_WAIT\', pid=0), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=2, laddr=addr(ip=\'127.0.0.1\', port=59213), raddr=(), status=\'NONE\', pid=11164), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'0.0.0.0\', port=902), raddr=(), status=\'LISTEN\', pid=3204), sconn(fd=-1, family=<AddressFamily.AF_INET6: 23>, type=1, laddr=addr(ip=\'::\', port=49666), raddr=(), status=\'LISTEN\', pid=1740), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'0.0.0.0\', port=49666), raddr=(), status=\'LISTEN\', pid=1740), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'127.0.0.1\', port=31752), raddr=(), status=\'LISTEN\', pid=4740), sconn(fd=-1, family=<AddressFamily.AF_INET: 2>, type=1, laddr=addr(ip=\'192.168.96.168\', port=62630), raddr=addr(ip=\'14.17.42.43\', port=36688), status=\'TIME_WAIT\', pid=0)]

（6）获取进程信息

通过psutil可以获取到所有进程的详细信息

>>> psutil.pids() # 所有进程ID
[3865, 3864, 3863, 3856, 3855, 3853, 3776, ..., 45, 44, 1, 0]
>>> p = psutil.Process(3776) # 获取指定进程ID=3776，其实就是当前Python交互环境
>>> p.name() # 进程名称
\'python3.6\'
>>> p.exe() # 进程exe路径
\'/Users/michael/anaconda3/bin/python3.6\'
>>> p.cwd() # 进程工作目录
\'/Users/michael\'
>>> p.cmdline() # 进程启动的命令行
[\'python3\']
>>> p.ppid() # 父进程ID
3765
>>> p.parent() # 父进程
<psutil.Process(pid=3765, name=\'bash\') at 4503144040>
>>> p.children() # 子进程列表
[]
>>> p.status() # 进程状态
\'running\'
>>> p.username() # 进程用户名

					
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