python使用小模块总结-命令行执行、压缩解压、目录查看、pid查看

执行shell命令

1.supprocess

2.commands

# -*- coding:utf-8 -*-
import subprocess
import commands

# py3/py2
result = subprocess.check_output('dir',cwd='D:m1day07')
print(result)

# py2
result = commands.getoutput('dir')
print(result)

压缩和解压文件

import shutil


#压缩用shutil 
# py2/py3
# shutil.make_archive(r'D:m1day07x1',format='zip',root_dir='D:m1day07m1')

# py3
# shutil._unpack

#解压用zipfile或tarfile
# py2/py3
import zipfile
import tarfile
obj = zipfile.ZipFile(r'D:m1day07x1.zip',mode='r')
obj.extractall(r'D:m1day07files')
obj.close()

查看目录下所有文件

import os
#os.listdir只能显示一层目录
# for li in os.listdir(r'D:m1day07files'):
#     print(li)

#os.walk能显示所有的文件.
# for base,folder,files in os.walk(r'D:m1day07files'):
#     for item in files:
#         file_path = os.path.join(base,item)
#         print(file_path)

根据pid杀死进程

# -*- coding:utf-8 -*-
import os
import signal

os.kill(1223,signal.SIGBREAK)

#signal.SIGBREAK可以用9这个数字替换