List All Files in A Directory with Python Guideline - Holistic SEO

To filter and list the files according to their names, we need to use “fnmatch.fnmatch()” and “os.listdir()” functions with name filtering ... SkiptocontentHolisticSEO-PythonSEO-HowtoListAllFilesinaDirectorywithPython?ListingfilesinadirectorywithPythonmeansthattakingnamesofthefilesinafolderviaPythonmodulesandscripts.DuringanykindofPythonandCodingProject,takingthenamesofthefilesinafoldercanbeuseful.Takingonlyacertaintypeoffile,certaintypesoffilesthatareunderoroveracertainsizeinKB,ortakingfilesfromafteracertaindatecanbeusefulforanalyzing,copying,moving,unitingdifferenttypesoffilesandtheircontent.Inthisarticle,wewillfocusonlistingfileswithPythonwithdifferentPythonModulesandcustomscripts.ListingFilesinaFolderwithOSModuleofPythonOSModuleisaPythonModulethatrelatedtotheoperatingsystemandithaslotsofdifferentfunctionsandmethodsformanagingthecomputer’soperatingsystem.Tolistfilesinafolder,first,wewilluse“OS”modulefromPython.Thenecessaryfunctiontolistfilesis“os.walk()”.“os.walk()”functionreturnsthenameofthedirectory,namesofthesubdirectories,andthenamesofthefilesinthecurrentfolder.Below,youwillseeaforloopexampleforlistingthefilenamesinafolder.importos forroot,dirs,filesinos.walk("."): forfilenameinfiles: print(filename)Inthisexample,wehavenestedforloop.Inthefirstlineofthecode,wehaveimportedthe“os”pythonmodule.Inthesecondline,wehavestartedourforloop,wehavecreatedavariablefortherootfolder,subdirectories,andthefilesthatarelocatedinthem.Wehaveenteredallofthesubdirectoriesintherootfolderandtakeallofthefiles.Wehavelistedallofthefiles’nameswiththeprintfunction.Youmayseethefilenamesinthecurrentworkingdirectoryasoutputofthefile.Youcanseethefileswithinthedirectory.Ifyouwanttolistonlythesubdircetoriesinadirectory,youshouldusethecodebelow.importos dirnames=set(dirname) forroot,dirs,filesinos.walk("."): fordirnameindirs: dirnames.add(dirname) print(dirnames)Inthisexample,wehaveused“set”featuresinPython.Since,weareusingaforlooptocollectalltheroot,directory,andfilenames,ifwewantonlythedirectorynames,itwouldcreate“duplicated”valuessuchas“__pycache__”or“.ipynb_checkpoints”forourcurrentexamplesinceIamusingmyownpersonalPythondocumentationfolder.InPython,“set”objectsdon’thaveindexnumbersorduplicatedvalues,soonlytheuniquevaluesarebeingappendedtoour“dirnames”variableviathe“add()”method.Youwillseethesub-directorynamesforthecurrentexamplebelow.Youmayseetheallfiles’nameswithinasetviaOSModuleofPython.Ifyouwantaclearerview,youmayuseanotherforloopforlistingallthedirectorynamesinafileviaPython.foriina: print(i)Youmayseetheresultbelow.Namesofthefilesinthedirectory.Ifyouwantallofthedirectorynamesincludingtheduplicatedones,youmayusethecodebelow.importos forroot,dirs,filesinos.walk("."): fordirnameindirs: print(dirname)YoumayseetheresultbelowandalsoIrecommendyoutopayattentiontotheduplicatedvalues.Directorynamesintherootfile.Withlistingfileswithinadirectory,youcanuse“Image”relatedbulkprocesseswiththemethodsandguidelinesbelow.HowtooptimizeimagesasbulkwithPythonHowtoresizeimagesasbulkwithPythonHowtoListCertainTypesofFilesinaDirectoryPython?Tolistonlythefileswithcertainextensions(certaintypesoffiles),“fnmatch”PythonModuleshouldbeusedwith“os”PythonModule.“fnmatch”Pythonmodulecanbeusedforspecifyingpatternsinstrings,thedeterminedstringpatternisusedforthefilteringthefilesaccordingtotheirtypes.Also,“os.listdir()”canbeusedtocreatealistthatcontainsthefilenamesinthecurrentdirectory.TocreateYoumayseeanexampleforlistingallofthefileswith“fnmatch.fnmatch()”and“os.listdir()”functions.importos,fnmatch filesOfDirectory=os.listdir('.') pattern="*.*" forfileinfilesOfDirectory: iffnmatch.fnmatch(file,pattern): print(file)Wehaveimportedthe“os”and“fnmatch”modules.Wehavecreatedavariablethatis“filesOfDirectory”thatcontainsallofthefilenamesofthecurrentdirectorywith“os.listdir()”.Also,weareusing“.”forspecifyingthecurrentpath.Wehavedetermineda“regexpattern”whichis“*.*”.Itmeansthatthepatternincludeseveryletterbeforeandafterthe“.”.Wehavecreatedaforloopforeveryelementofour“filesOfDirectory”variable.Wehavecreatedan“ifstatement”withthehelpof“fnmatch.fnmatch()”function.Ittakestwoarguments,oneisthepatternthatwehavecreatedandtheotheroneisthefilesinourlistthatarecreatedbythe“os.listdir()”function.Weareprintingthefiles.Youmayseetheresultbelow.Youmayseetheresultofourdirectorylistingforloop.Now,withthesamemethodology,let’scallonlythefileswiththe“.jl”extension.importos,fnmatch fileOfDirectory=os.listdir('.') pattern="*.jl*" forfilenameinfileOfDirectory: iffnmatch.fnmatch(filename,pattern): print(filename)Wehavechangedourpatternas“*.jl*”.Itmeansthatbringonlythefilesthathavetheextensionas“.jl”.Also,thelast“*”signisnotanobstaclehere,Iamleavingitthereforjustshowingthelogicof“patternandmatchinregex”.Itmeansthat“fnmatch.fnmatch()”functionwillonlyreturnthefilenamesthatendwiththe“.jl”extension.Youmayseetheresultbelow.ListingFilesinadirectorywithconditions.Ifwewanttolistonlythe“.ipynb”typeoffiles,wemayusethepatternbelow.importos,fnmatch fileOfDirectory=os.listdir('.') pattern="*.ipynb" forfilenameinfileOfDirectory: iffnmatch.fnmatch(filename,pattern): print(filename)Youmayseetheresultbelow.ListingFileswithinadirectorywithacertainconditionandaregexpattern.Wehavefourfilesthatendswith“.ipynb”.HowtoFilterandListFilesAccordingtoTheirNamesinPython?Tofilterandlistthefilesaccordingtotheirnames,weneedtouse“fnmatch.fnmatch()”and“os.listdir()”functionswithnamefilteringregexpatterns.YoumayfindanexampleoffilteringandlistingfilesaccordingtotheirnamesinPython.importos,fnmatch fileOfDirectory=os.listdir('.') pattern="*seo*.*" forfilenameinfileOfDirectory: iffnmatch.fnmatch(filename,pattern): print(filename)Inthisexample,wecallanyfilethathas“seo”wordinitwitha“.”.Itmeansthatbringanyfilethatincludes“seo”inthenamefromanytypeofextension.Youmayseetheresultbelow.Listingandfilteringfilesinadirectoryaccordingtotheirnames.HowtoUsePythonGeneratorsforListingFilesinaDirectorywithPythonGeneratorsareiteratorsinPython,insteadofreturninganoutput,wecanyieldtheresultwithacustomfunctionandthen,iterateovertheresultelementsonebyone.Wealsoneedtouse“os.path.isfile()”tofilterthefilesfromthefoldersordirectories.Youmayseeanexamplebelow.deflist_files(path): forfileinos.listdir(path): ifos.path.isfile(os.path.join(path,file)): yieldfile forfileinlist_files("."): print(file)Wehavestartedtodefineafunctionwiththeargumentas“path”.Wehaveusedforloopforcreatingalistforthespecifiedpathvia“os.listdir()”.Wehavecheckedwhethertheelementsinthespecifiedpathisafileornotviathe“os.path.isfile()”function.“os.path.join”isbeingusedforthejoiningthefilenameandthepathstringasanargumenttothe“os.path.isfile()”.Wehaveyieldedallofthefilenames.Forthecurrentpath,wehaveprintedallofthefilenames.Youmayseetheresultbelow.UsingPythonGeneratorsforListingFiles.ListingFilesinaDirectorywith“os.scandir()”FunctioninOSPythonModuleLastly,wecanusethe“os.scandir()”functionthatmakesthingsalittlebiteasierafterthePython3.6release.“os.scandir()”scansallthefilesandelementsinafolderincludingsubdirectoriesandcollectstheminthememoryforthedeveloper.Wewilluse“os.getwcd()”fordeterminingthepathas“currentworkingdirectory”andwewillfilterthefileswiththe“is_file()”methodof“ospythonmodule”.Youmayseethecodeblockbelow.importos path=os.getcwd() withos.scandir(path)asfileNames: forfileinfileNames: iffile.is_file(): print(file.name)Youmayseetheresultofthecodeabove,below.Listingfilenameswith“os.scandir”iseasier.“If“os.scandir(path)”meansanifconditionsuchastheifthepaththatisgivencorrect.HowtoListFilesinaDirectorywiththePathlibPythonModulePathlibisaPythonModulethatisbeingusedforfilesystemmanagement.PathlibPythonModulehasconcreteandpurepathsformanipulatingthepathsoffiles.TolistallofthefilesinadirectoryviaPathlib,wecanusethe“pathlib.Path()”functionand“iterdir()”functiontogether.Youcanseeanexampleofusageforthefilelistingwithpathlibpythonmodule.importpathlib currentDirectory=pathlib.Path('.') forcurrentFileincurrentDirectory.iterdir(): print(currentFile)Wehaveimportedthepathlib.Wehavecreatedavariablewiththenameof“currentDirectory”.Wehaveassignedittothe“pathlib.Path(‘.’)”function.“.”meansthecurrentdirectoryagain.Intheexampleof“os.listdir()”,wewerecreatingalistthatcontainsallofthefiles,inthisexample,weneedtousethe“iterdir()”functionforthe“pathlib.Path”instance.Wehavestartedaloopforeveryfileinthe“currentDirectory”variable’spathbyiteratingoveritselements.Wehaveprintedeveryiteratedelement.Youmayseethelistoffilesinthecurrentdirectory.ListingFilesinaDirectorywith“Pathlib”PythonModule.HowtoFilterandListFilesAccordingtoTheirNamesviaPathlibPythonModuleTofilterandlistfilesaccordingtotheirnameswithPathlibPythonModule,weneedtousethe“glob()”function.“glob()”functionisbeingusedfordeterminingpatternstofilterthefilesaccordingtotheirnamesorextension.Youmayseeanexamplebelow.importpathlib currentDirectory=pathlib.Path('.') currentPattern="*.ipynb" forcurrentFileincurrentDirectory.glob(currentPattern): print(currentFile)Wehavedeterminedapatternas“*.ipynb”sothatwecancallonlythosefiles.Wehaveused“pathlib.glob()”methodforfilteringthefilesinthecurrentdirectory.Youmayseetheresultbelow.ListingfileswithaconditionviaPathlibPythonModule.Tofilterandlistfilesaccordingtotheirnames,youmaychangethe“currentPattern”variableanditsregexcontentasithasbeendoneinthisfilelistingwithpythonguidelinesbefore.LastThoughtsonListingFilesinaFolderwithPythonandUseCasesforSEOsandDevelopersListingfilesinadirectorywithPythonisanimportantskill.Duringaproject,whetheritbeanSEOProjectorDeveloperproject,listingfilesinafoldercanhelptopersontoseethedifferenttypesoffiles,filterthosefilesaccordingtotheirextensionsornamessothatonlythenecessaryfilescanbeusedforacertaintypeofprocess.Forinstance,tooptimizeimagesfromawebsitewithoutchanginganyoftheimageURLscanbepossiblethankstolistingandfilteringfilesaccordingtotheirnameswithinarootdirectory.Thus,withoutchangingtheURLsoftheimages,theycanbeoptimizedandthedeveloperteamcanjustchangethefileintheserver.OptimizingimagesinbulkwithPythonisanothertopicbutwithoutlistingthefilesaccordingtotheirextensions,itwouldn’tcreatesuchanefficientresult.ListingfilesaccordingtotheirnamesandextensionsinadirectorywithPythonalsocanbeusefulfordatascienceandwebscrapingprojects,uniting,moving,copyingthesefilescanbepossiblebylistingthem.Inthefuture,wealsowillfocusonmoving,copying,andunitingordividingfileswithPython.Also,filteringfilesaccordingtotheirdatesandsizeswillbeaddedinthefutureofourlistingfileswithinadirectorywithPythonguidelinesinthefuture.AuthorRecentPostsKorayTuğberkGÜBÜROwnerandFounderatHolisticSEO&DigitalKorayTuğberkGÜBÜRisthefounderandowneroftheHolisticSEO&Digital.Withmorethan6yearsofSEOexperience,KorayTuğberkGÜBÜRusesDataScience,Visualization,Front-endCoding,andGooglePatentsforSEOProjects.KorayTuğberkGÜBÜRisacontributingauthorforOnCrawl,JetOctopus,Authoritas,Serpstat,NewzDash.KorayTuğberkGÜBÜRisaspeakerforSEOwebinarswithRankSenseandAuthoritas.KorayTuğberkGÜBÜRhasworkedwithover200companiesfortheirSEOProjects.KorayTuğberkGÜBÜRusesTechnicalSEO,ContentMarketing,andCodingstrategiesforimprovingtheorganicvisibilityoftheSEOProjects.LatestpostsbyKorayTuğberkGÜBÜR(seeall)BrightonSEO:3DaysofHogwartsfortheSEO Industry-April21,2022Proxy-AuthenticateHTTPRequestHeader:Syntax,Directive,Examples-March16,2022HTTPAuthentication:BasicAuthentication-March16,2022 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