标准库

1 OS 模块



In [2]:

    
import os
os.getcwd()









    Out[2]:





'/Users/gaufung/WorkSpace/Python/Data_Analytics_Learning_Note/python-statatics-tutorial/basic-theme/python-language'



In [3]:

    
os.listdir(os.curdir)









    Out[3]:





['.ipynb_checkpoints',
 'Function.ipynb',
 'Module_and_Package.ipynb',
 'standard_library.ipynb']



In [4]:

    
os.mkdir('junkdir')



In [5]:

    
os.listdir(os.curdir)









    Out[5]:





['.ipynb_checkpoints',
 'Function.ipynb',
 'junkdir',
 'Module_and_Package.ipynb',
 'standard_library.ipynb']



In [15]:

    
fp = open('junk.txt','w')
fp.close()
a = os.path.abspath('junk.txt')
print a









    



/Users/gaufung/WorkSpace/Python/Data_Analytics_Learning_Note/python-statatics-tutorial/basic-theme/python-language/junk.txt



In [18]:

    
os.path.split(a)









    Out[18]:





('/Users/gaufung/WorkSpace/Python/Data_Analytics_Learning_Note/python-statatics-tutorial/basic-theme/python-language',
 'junk.txt')



In [17]:

    
os.path.dirname(a)









    Out[17]:





'/Users/gaufung/WorkSpace/Python/Data_Analytics_Learning_Note/python-statatics-tutorial/basic-theme/python-language'



In [16]:

    
os.path.basename(a)









    Out[16]:





'junk.txt'



In [19]:

    
os.path.splitext(os.path.basename(a))









    Out[19]:





('junk', '.txt')



In [20]:

    
os.path.exists(a)









    Out[20]:





True



In [21]:

    
os.path.isfile(a)









    Out[21]:





True



In [22]:

    
os.path.isdir(a)









    Out[22]:





False



In [24]:

    
os.path.join('/User/gaufung/WorkSpace','junk.txt')









    Out[24]:





'/User/gaufung/WorkSpace/junk.txt'



In [25]:

    
os.system('ls')









    Out[25]:





0

环境变量



In [32]:

    
os.environ.keys()









    Out[32]:





['LESS',
 'LC_CTYPE',
 'TERM_PROGRAM_VERSION',
 'LOGNAME',
 'USER',
 'PATH',
 'HOME',
 'ZSH',
 'TERM_PROGRAM',
 'TERM',
 'Apple_PubSub_Socket_Render',
 'SHLVL',
 'XPC_FLAGS',
 '_',
 'TERM_SESSION_ID',
 'XPC_SERVICE_NAME',
 'JPY_PARENT_PID',
 'SSH_AUTH_SOCK',
 'SHELL',
 'GIT_PAGER',
 'TMPDIR',
 'LSCOLORS',
 'MPLBACKEND',
 'CLICOLOR',
 '__CF_USER_TEXT_ENCODING',
 'PWD',
 'PAGER']



In [35]:

    
os.getenv('PYTHONPATH')

2 shutil

高效的文件操作

shutil.rmtree 递归的删除文件
shutil.move 递归的移动文件
shuilt.copy 递归的拷贝文件

3 glob

高效的文件匹配模式



In [37]:

    
import glob
glob.glob('*.ipynb')









    Out[37]:





['Function.ipynb', 'Module_and_Package.ipynb', 'standard_library.ipynb']

4 Sys

系统信息



In [41]:

    
import sys
sys.platform









    Out[41]:





'darwin'



In [42]:

    
sys.version









    Out[42]:





'2.7.12 |Anaconda 4.2.0 (x86_64)| (default, Jul  2 2016, 17:43:17) \n[GCC 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)]'



In [43]:

    
sys.prefix









    Out[43]:





'/Users/gaufung/Anaconda/anaconda'



In [44]:

    
sys.argv









    Out[44]:





['/Users/gaufung/Anaconda/anaconda/lib/python2.7/site-packages/ipykernel/__main__.py',
 '-f',
 '/Users/gaufung/Library/Jupyter/runtime/kernel-eeb750ec-69fa-4ae1-9843-b13782c31533.json']



In [ ]: