Python standard library of module os

 

 

Get the current directory

import os
print(os.getcwd())
#输出
C:\Users\admin\PycharmProjects\module

　　

Change directory

import os
os.chdir(r'C:\Users\admin\PycharmProjects')
print(os.getcwd())
#输出
C:\Users\admin\PycharmProjects

　　

Returns the current directory

os Import 
Print (os.curdir) 
# output 
.

　　

Parent directory

OS Import 
Print (os.pardir) 
# output 
..

　　

Recursive directory build

import os
os.makedirs(r"C:\a\b\c")

　　

Recursive directory delete

Need only delete directory directory is empty.

import os
os.removedirs(r"C:\a\b\c")

　　

Build directory

Is not recursive

import os
os.mkdir(r"C:\test")

　　

Delete empty directories

It is not recursive.

import os
os.rmdir(r"C:\test")

　　

File in the folder listed in the directory

OS Import 
Print (the os.listdir (os.curdir)) 
# output 
[ 'main.py', 'module_test.py' , 'package', '__pycache__']

　　

Delete a file

import os
os.remove(r"C:\test.exe")

　　

Renaming a file

import os
os.rename(oldname,newname)

　　

Get the file directory information

import os
print(os.stat(os.curdir))
#输出
os.stat_result(st_mode=16895, st_ino=68961369294131359, st_dev=138692802, st_nlink=1, st_uid=0, st_gid=0, st_size=4096, st_atime=1581686008, st_mtime=1581686008, st_ctime=1581659080)

　　

Acquiring path separators operating system

Windows path separators: \

Linux path separator: /

os Import 
Print (os.sep) 
# output 
\

　　

Acquisition of the operating system line terminator

Under Windows:

OS Import 
Print (the repr (os.linesep)) 
# output 
'\ r \ n'

　　

Get String operating system environment variables divided route

 

Windows:

OS Import 
Print (os.pathsep) 
# output 
;

　　

Linux is a colon.

 

View the current system environment variables

the amount 
print (os.environ)

　　

Output string representing the current operating system

Windows

OS Import 
Print (The os.name) 
# output 
nt

　　

Excuting an order

There Echo

import os
os.system("dir")

　　

Gets the absolute path

import os
print(os.path.abspath(__file__))
#输出
C:\Users\admin\PycharmProjects\module\main.py

　　

Split path and file

import os
print(os.path.split(r"C:\Users\admin\PycharmProjects\module\main.py"))
#输出
('C:\\Users\\admin\\PycharmProjects\\module', 'main.py')

　　

Get path pathname

import os
print(os.path.dirname(r"C:\Users\admin\PycharmProjects\module\main.py"))
#输出
C:\Users\admin\PycharmProjects\module

　　

Get file path name

import os
print(os.path.basename(r"C:\Users\admin\PycharmProjects\module\main.py"))
#输出
main.py

　　

Determining whether there is a specified path

import os
print(os.path.exists(r"C:\Users\admin\PycharmProjects\module\main.py"))
#输出
True

　　

Determine whether it is an absolute path

import os
print(os.path.isabs(r"C:\Users\admin\PycharmProjects\module\main.py"))
#输出
True

　　

Determine whether a file is

import os
print(os.path.isfile(r"C:\Users\admin\PycharmProjects\module\main.py"))
#输出
True

　　

To determine whether a directory

import os
print(os.path.isdir(r"C:\Users\admin\PycharmProjects\module"))
#输出
True

　　

Gets the last access time of file

import os
print(os.path.getatime(r"C:\Users\admin\PycharmProjects\module\main.py"))
#输出
1581687585.792178

　　

Get the file creation time

import os
print(os.path.getctime(r"C:\Users\admin\PycharmProjects\shodan\module\main.py"))
#输出
1581659101.4161289

　　

 

Gets the last modified time of the file

import os
print(os.path.getmtime(r"C:\Users\admin\PycharmProjects\shodan\module\main.py"))
#输出
1581687695.1447003