In [1]:

    

import os
os.name


    

    
Out[1]:





'posix'

In [2]:

    

os.uname()


    

    
Out[2]:





posix.uname_result(sysname='Linux', nodename='ben', release='4.10.0-35-generic', version='#39~16.04.1-Ubuntu SMP Wed Sep 13 09:02:42 UTC 2017', machine='x86_64')

In [4]:

    

os.environ.get('PATH')


    

    
Out[4]:





'/home/ben/.virtualenvs/tf-gpu/bin:/home/ben/.virtualenvs/tf-gpu/bin:/usr/local/cuda/bin:/home/ben/bin:/home/ben/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin'

In [5]:

    

os.environ.get('x', 'default')


    

    
Out[5]:





'default'

In [6]:

    

os.path.abspath('.')


    

    
Out[6]:





'/home/ben/桌面/gluon-tutorials-zh-master/chapter02_supervised-learning'

In [13]:

    

s = os.path.join('/home/ben/桌面/gluon-tutorials-zh-master/chapter02_supervised-learning', 'testdir1')
s


    

    
Out[13]:





'/home/ben/桌面/gluon-tutorials-zh-master/chapter02_supervised-learning/testdir1'

In [14]:

    

os.mkdir(s)


    

In [17]:

    

os.rmdir(s1)


    

In [16]:

    

s1 = '/home/ben/桌面/gluon-tutorials-zh-master/chapter02_supervised-learning/testdir'


    

In [19]:

    

l, f = os.path.split('/home/ben/桌面/gluon-tutorials-zh-master/chapter02_supervised-learning/file.txt')


    

In [20]:

    

l


    

    
Out[20]:





'/home/ben/桌面/gluon-tutorials-zh-master/chapter02_supervised-learning'

In [21]:

    

f


    

    
Out[21]:





'file.txt'

In [23]:

    

file, ext = os.path.splitext('file.txt')


    

In [24]:

    

file


    

    
Out[24]:





'file'

In [25]:

    

ext


    

    
Out[25]:





'.txt'

In [26]:

    

os.rename('test.txt', 'ben.txt')


    

In [30]:

    

ls *.txt


    

    




ben.txt

In [31]:

    

os.remove('ben.txt')


    

In [32]:

    

ls *.txt


    

    




ls: 无法访问'*.txt': 没有那个文件或目录

In [33]:

    

[x for x in os.listdir('.') if os.path.isfile(x) and os.path.splitext(x)[1]=='.py']


    

    
Out[33]:





[]

In [34]:

    

[x for x in os.listdir('.') if os.path.isdir(x)]


    

    
Out[34]:





['__pycache__', '.ipynb_checkpoints']

In [36]:

    

[x for x in os.listdir('.') if os.path.isfile(x)]


    

    
Out[36]:





['softmax-regression-scratch.md',
 'reg-scratch.md',
 'underfit-overfit.md',
 'mlp-scratch.md',
 'softmax-regression-gluon.md',
 'mlp-gluon.md',
 'kaggle-gluon-kfold-0925.md',
 'linear-regression-scratch-0926.md',
 'Untitled.ipynb',
 '02.md',
 'linear-regression-gluon-0926.md',
 'submission.csv',
 'reg-gluon.md']

In [37]:

    

print(os.listdir('.'))


    

    




['softmax-regression-scratch.md', 'reg-scratch.md', 'underfit-overfit.md', 'mlp-scratch.md', 'softmax-regression-gluon.md', 'mlp-gluon.md', 'kaggle-gluon-kfold-0925.md', 'linear-regression-scratch-0926.md', 'Untitled.ipynb', '02.md', 'linear-regression-gluon-0926.md', 'submission.csv', '__pycache__', '.ipynb_checkpoints', 'reg-gluon.md']

In [ ]: