Python-os module Use

1. Merging paths

Os.path.join ("c:\\music\\ap\\0","mav.mp3")'  C:\\music\\ap\\0\\mav.mp3'

2. Find the User directory

Os.path.expanduser ("~")'c:\\users\\administrator' 

3. Split path name and file name

Os.path.split ("theWolf of the c:\\music\\ap\\ sheepskin." MP3") (The Wolf of the'c:\\music\\ap' sheepskin. MP3')#  tuple tuples

4. Separating path names and filenames by defining tuples

>>> (Filepath,filename) =os.path.split ("theWolf of c:\\music\\ap\\ sheepskin." MP3")>>> filepath'c:\\music\\ap'>> > filename' sheepskin Wolf. MP3'

5. Separate file names and extensions

>>> filename' sheepskin Wolf. MP3'>>> (shortname,extensionname) =os.path.splitext (filename)>>>  ShortName ' sheepskin wolf '>>> extensionname'. MP3'

6. List all folders and files at this level under the path

 Os.listdir ( " d:\\mysql\\   " ) [ "  lib   ", "  my 2017-12-10 1949.ini.bak   ", "  my 2017-12-10 1953.ini.bak   " ,  " my.ini   ' ] 

>>> Os.listdir ("c:\\")
[' $360section ', ' $Recycle. Bin ', ' 1805-18 SUWLARKJ14 into the shell spot welder (schematic) a0.pdf ', ' 1805-18 SUWLARKJ14 Huipenbo (servo line changed from ultra-high flex to slender). pdf ', ' 36 0SANDBOX ', ' acadminidump.dmp ', ' AX NF ZZ ', ' Boot ', ' bootmgr ', ' config.msi ', ' Documents and Settings ', ' Downloads ', ' Driver S ', ' drmsoft ', ' feigedownload ', ' Google ', ' hangcha.pdf ', ' hwupdates ', ' Intel ', ' kingdeeplm ', ' MSOCache ', ' oemsf ', ' Offline_ftninfo.txt ', ' Pagefile.sys ', ' Program Files ', ' Program Files (x86) ', ' ProgramData ', ' qmdownload ', ' skypee ', ' Sse138folder ', ' System Volume information ', ' system32folder ', ' TEMP ', ' Users ', ' Uwscan_n.ini ', ' Weldwave.ini ', ' Windows ', ' _ISTMP1. DIR ']

7. Determine if a path is a file or a directory

>>> [F forFinchOs.listdir ("c:\\")ifOs.path.isfile (Os.path.join ("c:\\", F))] ['1805-18 SUWLARKJ14 into the Shell spot welding machine (schematic) a0.pdf','1805-18 SUWLARKJ14 Huipenbo (servo line changed from ultra-high flex to slender). pdf','acadminidump.dmp','bootmgr','hangcha.pdf','Offline_ftninfo.txt','Pagefile.sys','Uwscan_n.ini','Weldwave.ini'] File judgment>>> [F forFinchOs.listdir ("c:\\")ifOs.path.isdir (Os.path.join ("c:\\", F))] ['$360section','$Recycle. Bin','360SANDBOX','AX NF ZZ','Boot','Config.msi','Documents and Settings','Downloads','Drivers','Drmsoft','Feigedownload','Google','hwupdates','Intel','KINGDEEPLM','MSOCache','Program Files','Program Files (x86)','ProgramData','Qmdownload','Skypee','Sse138folder','System Volume Information','System32folder','TEMP','Users','Windows','_ISTMP1. DIR'] folder to determine

8. Find a specific file

>>> Os.listdir ("d:\\")['$RECYCLE. BIN','1.json.wmv','1805-18 SUWLARKJ14 in-shell pre-welding machine (IO configuration table)-A0.pdf','1805-18 suwlarkj14 into the shell spot welding machine A0-1.bak','1805-18 suwlarkj14 into the shell spot welding machine A0-1.DWG','1805-18 SUWLARKJ14 into the shell spot welding machine A0.DWG','1805-18 Rui Pu into the shell spot welding machine A0_2018_06_21.DWG','fat_ Modification of 1805-28 suwlarkj13-02 in-shell pre-welding machine two. xlsx','2018-related requirements for collection of dues. RAR','360Downloads','360MoveData','360 Secure Browser Download','6PPM in-shell pre-welding machine','Adobe','Androidstudio','Asmpg','Baiduyundownload','C # Notes','CAD','cat_200_300.jpg','Datastream.txt','Icon.png','Irisdata.txt','Lab.dat','Lbview','Lib','LVS.txt','Map.txt','Masm32','Mels','MES system data acquisition requirements Table v1.05 Chengdu, the laser sealing (laser cleaning). xlsx','MFC class diagram. PNG','Mkspecs','Mmp.txt','Mmpp.txt','MSOCache','MySQL','Open.reg','openok.reg-copy. txt','Openok.reg.txt','Plugins','pp. PNG','py','python','QT','Sanliuo','Sheet.xls','Skypee','SolidWorks','Stormmedia','System Volume Information','VC','vs','ye_applications','Entertainment','Training table for sealing nail welding table. xlsx','Embedded Tools Software','Tool Software','Registration Procedure','Welding Barcode','User Directory','Electrical Professional drawings Audit self-Test table fr-02-17066 (1). xls','errors in the program specification. Doc','Programming Software','Automation Manual','all data and parameters of the West Dan Fu seal nail','Thunder Download','Code of Procedure for silver-lung seal nails-docx']>>>ImportGlob>>> Glob.glob ("D:\\*.txt")['D:\\datastream.txt','D:\\irisdata.txt','D:\\lvs.txt','D:\\map.txt','D:\\mmp.txt','D:\\mmpp.txt','d:\\openok.reg-copy. txt','D:\\openok.reg.txt']

Python-os module Use