Some methods of the OS module in Python

Import Os,sys,time
Print (OS.GETCWD (), ' Get working directory ')  #获取工作目录
Print (os.environ[' systemdrive '), ' Get system drive letter ')   #获取系统盘符
Print (os.environ[' userprofile '), ' Get user directory ')    #获取用户目录
Print (os.environ[' windir '), ' Get Windows directory ')    #获取windows目录
For I in Os.walk (' F:\python ', topdown=false,onerror=none):  #遍历文件目录
    Print (i)
    Time.sleep (0.5);

　Output results

F:\python\zw18\ Graduation Design Get working directory
C: Get system drive letter
C:\Users\Administrator getting the user directory
C:\WINDOWS getting the WINDOWS directory

(' F:\\python\\day1\\.idea ', [], [' Day1.iml ', ' modules.xml ', ' workspace.xml '])
(' F:\\python\\day1 ', ['. Idea '], [])
(' F:\\python\\zw18\\.idea\\dictionaries ', [], [' Administrator.xml '])
(' F:\\python\\zw18\\.idea\\inspectionprofiles ', [], [])
(' F:\\python\\zw18\\.idea ', [' dictionaries ', ' inspectionprofiles '], [' Encodings.xml ', ' misc.xml ', ' modules.xml ', ' Workspace.xml ', ' ZW18.IML '])
(' F:\\python\\zw18\\day1\\homework ', [], [' homework_1.py '])
(' f:\\python\\zw18\\day1\\__pycache__ ', [], [])
(' F:\\python\\zw18\\day1 ', [' homework ', ' __pycache__ '], [' Black_user.xml ', ' game.py ', ' hello.py ', ' homework.py ', ' input.py ', ' login.py '])
(' F:\\python\\zw18\\day2\\dada ', [], [])
(' f:\\python\\zw18\\day2\\__pycache__ ', [], [' LOGIN.CPYTHON-36.PYC '])
(' F:\\python\\zw18\\day2 ', [' Dada ', ' __pycache__ '], [' login.py ', ' shopping.py ', ' time.py ', ' data type. py ', ' module first knowledge. Py '])
(' F:\\python\\zw18\\day3 ', [], [' progress bar. Py '])
(' F:\\PYTHON\\ZW18\\QT ', [], [])
(' F:\\python\\zw18\\ Graduation Design ', [], [' qt.py ', ' Get memory _ process _ network. Py ', ' traverse directory. Py '])
(' F:\\python\\zw18 ', ['. Idea ', ' day1 ', ' day2 ', ' day3 ', ' Qt ', ' graduation design '], [])
(' f:\\python\\ directory \\.idea\\inspectionprofiles ', [], [])
(' f:\\python\\ directory \\.idea ', [' inspectionprofiles '], [' Misc.xml ', ' modules.xml ', ' workspace.xml ', ' directory. iML '])
(' f:\\python\\ directory \\venv\\Include ', [], [])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\EGG-INFO ', [], [' Dependency_links.txt ', ' Entry_ Points.txt ', ' not-zip-safe ', ' pkg-info ', ' requires.txt ', ' SOURCES.txt ', ' top_level.txt '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\commands ', [], [' check.py ', ' completion.py ' , ' download.py ', ' freeze.py ', ' hash.py ', ' help.py ', ' install.py ', ' list.py ', ' search.py ', ' show.py ', ' uninstall.py ', ' wheel.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\compat ', [], [' dictconfig.py ', ' __init__.py ‘])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\models ', [], [' index.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\operations ', [], [' check.py ', ' freeze.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\req ', [], [' req_file.py ', ' req_install.py ', ' req_set.py ', ' req_uninstall.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\utils ', [], [' appdirs.py ', ' build.py ', ' deprecation.py ', ' encoding.py ', ' filesystem.py ', ' glibc.py ', ' hashes.py ', ' logging.py ', ' outdated.py ', ' packaging.py ' , ' setuptools_build.py ', ' ui.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\vcs ', [], [' bazaar.py ', ' git.py ', ' mercurial.py ', ' subversion.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\cachecontrol\\caches ', [], [' File _cache.py ', ' redis_cache.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\cachecontrol ', [' caches '], [' adapter.py ', ' cache.py ', ' compat.py ', ' controller.py ', ' filewrapper.py ', ' heuristics.py ', ' serialize.py ', ' wrapper.py ', ' _cmd.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\colorama ', [], [' ansi.py ', ' ansitowin32.py ', ' initialise.py ', ' win32.py ', ' winterm.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\distlib\\_backport ', [], [' misc.py ', ' shutil.py ', ' sysconfig.cfg ', ' sysconfig.py ', ' tarfile.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\distlib ', [' _backport '], [' compat.py ', ' database.py ', ' index.py ', ' locators.py ', ' manifest.py ', ' markers.py ', ' metadata.py ', ' resources.py ', ' scripts.py ', ' t32.exe ', ' t64.exe ', ' util.py ', ' version.py ', ' w32.exe ', ' w64.exe ', ' wheel.py ', ' __init__.py ']
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\html5lib\\filters ', [], [' alphabeticalattributes.py ', ' base.py ', ' inject_meta_charset.py ', ' lint.py ', ' optionaltags.py ', ' sanitizer.py ', ' whitespace.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\html5lib\\treeadapters ', [], [' genshi.py ', ' sax.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\html5lib\\treebuilders ', [], [' base.py ', ' dom.py ', ' etree.py ', ' etree_lxml.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\html5lib\\treewalkers ', [], [' base.py ', ' dom.py ', ' etree.py ', ' etree_lxml.py ', ' genshi.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\html5lib\\_trie ', [], [' datrie.py ', ' py.py ', ' _base.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\html5lib ', [' Filters ', ' Treeadapters ', ' treebuilders ', ' treewalkers ', ' _trie '], [' constants.py ', ' html5parser.py ', ' serializer.py ', ' _ ihatexml.py ', ' _inputstream.py ', ' _tokenizer.py ', ' _utils.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\lockfile ', [], [' linklockfile.py ' , ' mkdirlockfile.py ', ' pidlockfile.py ', ' sqlitelockfile.py ', ' symlinklockfile.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\packaging ', [], [' markers.py ', ' requirements.py ', ' specifiers.py ', ' utils.py ', ' version.py ', ' _compat.py ', ' _structures.py ', ' __about__.py ', ' __init_ _.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\pkg_resources ', [], [' __init__.py ‘])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\progress ', [], [' bar.py ', ' counter.py ', ' helpers.py ', ' spinner.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\requests\\packages\\chardet ', [] , [' big5freq.py ', ' big5prober.py ', ' chardetect.py ', ' chardistribution.py ', ' charsetgroupprober.py ', ' charsetprober.py ', ' codingstatemachine.py ', ' compat.py ', ' constants.py ', ' cp949prober.py ', ' escprober.py ', ' escsm.py ' ', ' eucjpprober.py ', ' euckrfreq.py ', ' euckrprober.py ', ' euctwfreq.py ', ' euctwprober.py ', ' gb2312freq.py ', ' gb2312prober.py ', ' hebrewprober.py ', ' jisfreq.py ', ' jpcntx.py ', ' langbulgarianmodel.py ', ' langcyrillicmodel.py ', ' langgreekmodel.py ', ' langhebrewmodel.py ', ' langhungarianmodel.py ', ' langthaimodel.py ', ' latin1prober.py ', ' mbcharsetprober.py ', ' mbcsgroupprober.py ', ' mbcssm.py ', ' sbcharsetprober.py ', ' sbcsgroupprober.py ', ' sjisprober.py ' , ' universaldetector.py ', ' utf8prober.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\requests\\packages\\urllib3\\ Contrib ', [], [' appengine.py ', ' ntlmpool.py ', ' pyopenssl.py ', ' socks.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\requests\\packages\\urllib3\\ Packages\\ssl_match_hostname ', [], [' _implementation.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\requests\\packages\\urllib3\\ Packages ', [' ssl_match_hostname '], [' ordered_dict.py ', ' six.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\requests\\packages\\urllib3\\ Util ', [], [' connection.py ', ' request.py ', ' response.py ', ' retry.py ', ' ssl_.py ', ' timeout.py ', ' url.py ', ' __init__.py '] )
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\requests\\packages\\urllib3 ', [' Contrib ', ' packages ', ' util '], [' connection.py ', ' connectionpool.py ', ' exceptions.py ', ' fields.py ', ' filepost.py ', ' poolmanager.py ', ' request.py ', ' response.py ', ' _collections.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\requests\\packages ', [' Chardet ', ' URLLIB3 '], [' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\requests ', [' packages '], [' adapters.py ', ' api.py ', ' auth.py ', ' Cacert.pem ', ' certs.py ', ' compat.py ', ' cookies.py ', ' exceptions.py ', ' hooks.py ', ' models.py ', ' sessions.py ', ' status_codes.py ', ' structures.py ', ' utils.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor\\webencodings ', [], [' labels.py ', ' mklabels.py ', ' tests.py ', ' x_user_defined.py ', ' __init__.py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip\\_vendor ', [' CacheControl ', ' Colorama ', ' Distlib ', ' html5lib ', ' lockfile ', ' packaging ', ' pkg_resources ', ' progress ', ' requests ', ' webencodings '], [' appdirs.py ' , ' distro.py ', ' ipaddress.py ', ' ordereddict.py ', ' pyparsing.py ', ' re-vendor.py ', ' retrying.py ', ' six.py ', ' __init__.py ' ‘])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg\\pip ', [' commands ', ' compat ', ' models ', ' Operations ', ' req ', ' utils ', ' VCs ', ' _vendor '], [' basecommand.py ', ' baseparser.py ', ' cmdoptions.py ', ' download.py ', ' exceptions.py ', ' index.py ', ' locations.py ', ' pep425tags.py ', ' status_codes.py ', ' wheel.py ', ' __init__.py ', ' __main__. Py '])
(' f:\\python\\ directory \\venv\\Lib\\site-packages\\pip-9.0.1-py3.6.egg ', [' egg-info ', ' Pip '], [])
(' f:\\python\\ directory \\venv\\Lib\\site-packages ', [' Pip-9.0.1-py3.6.egg '], [' Easy-install.pth ', ' Setuptools-28.8.0-py3.6.egg ', ' setuptools.pth '])
(' f:\\python\\ directory \\venv\\Lib\\tcl8.6 ', [], [' INIT.TCL '])
(' f:\\python\\ directory \\venv\\Lib ', [' site-packages ', ' tcl8.6 '], [])
(' f:\\python\\ directory \\venv\\Scripts ', [], [' Activate ', ' activate.bat ', ' activate.ps1 ', ' deactivate.bat ', ' Easy_ ' install-3.6-script.py ', ' easy_install-3.6.exe ', ' easy_install-3.6.exe.manifest ', ' easy_install-script.py ', ' Easy_ Install.exe ', ' easy_install.exe.manifest ', ' pip-script.py ', ' pip.exe ', ' pip.exe.manifest ', ' pip3-script.py ', ' pip3.6-script.py ', ' pip3.6.exe ', ' pip3.6.exe.manifest ', ' pip3.exe ', ' pip3.exe.manifest ', ' pyexpat.pyd ', ' Python.exe ' , ' Python3.dll ', ' python36.dll ', ' pythonw.exe ', ' select.pyd ', ' sqlite3.dll ', ' tcl86t.dll ', ' tk86t.dll ', ' Unicodedata.pyd ', ' vcruntime140.dll ', ' winsound.pyd ', ' _asyncio.pyd ', ' _bz2.pyd ', ' _ctypes.pyd ', ' _ctypes_test.pyd ', ' _decimal.pyd ', ' _elementtree.pyd ', ' _hashlib.pyd ', ' _lzma.pyd ', ' _msi.pyd ', ' _multiprocessing.pyd ', ' _ Overlapped.pyd ', ' _socket.pyd ', ' _sqlite3.pyd ', ' _ssl.pyd ', ' _testbuffer.pyd ', ' _testcapi.pyd ', ' _testconsole.pyd ', ' _testimportmultiple.pyd ', ' _testmultiphase.pyd ', ' _tkinter.pyd '])
(' f:\\python\\ directory \\venv ', [' Include ', ' Lib ', ' Scripts '], [' pyvenv.cfg '])
(' f:\\python\\ directory ', ['. Idea ', ' venv '], [])
(' F:\\python ', [' day1 ', ' zw18 ', ' directory '], [])

Some methods of the OS module in Python