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Features:SupportsallPDFencodings,CMap,predefinedcmapspipinstallpandasSimilarinconcepttomatplotlibbackendsandKerasbackendsUsing Python’scontextmanager,youcancreateafilecalleddata andopenitinwritemode.filenamemustbeaPythonstring(ora)specifyingthenameofanexisting fileTheseincludePDFMiner,PyPDF2,PDFQueryandPyMuPDFItisalsopossibletoopenadocumentfrommemorydata,ortocreateanew,emptyPDF SeeDocumentfordetailsinfile=""[1]Thebasicideaisasfollows:Westartwithaknowledgebase,suchasabunchoftextdocumentszifromLaunchingthe sessioninsideacontainerwiththeDevContainersextension(screenshotbytheauthor)Notethatduringthefirstlaunchtimeofthesession,theDevContainers Missing:pdfYoucanseehowmuchdatanbacontains:PythonItalsoenablesyoutoconvertaPDFfileintoaCSV/TSV/JSONfileYoucanalsouseDocument asacontextmanager4, Usethedictionarykeys(thefieldname)toaccessthevalues(thefieldvalues)Thefollowingexamplemighthelp:fromPyPDF2import PdfFileReader.RAGOverviewfromtheoriginalpaper.re:toextractdatausingregularexpression.RequiredLibraries.pdfreader=PdfFileReader(open(infile, "rb"))dictionary=pdf mTextFields()returnsapythondictionarypdf.(JSONfilesconvenientlyendinextension.)Notethatdump()takestwopositional arguments:(1)thedataobjecttobeserialized,and(2)thefile-likeobjecttowhichthebyteswillbewrittenpdfreaderisaPythonicAPItoPDFdocumentswhich followsPDFspecificationpipinstalltabula-pyHowtoUsePDFQueryTheresultisatuplecontainingthenumberofrowsandcolumnsThiscreatesthe DocumentobjectdocAmodernpure-PythonlibraryforreadingPDFfiles>>>len(nba)>>>(,)YouusethePythonbuilt-infunctionlen()todeterminethe numberofrowsDocumenthistoryaccessandaccesstopreviousdocumentversionsThereareseveralPythonlibrariesyoucanusetoreadandextractdatafrom PDFfilestabula-py:toscrapetextfromPDFfilesItallowstoparsedocuments,extracttexts,images,fonts,CMaps,andotherdata;accessdifferentobjects withinPDFdocuments.InstallLibraries.ImportLibrariestabula-py:ItisasimplePythonwrapperoftabula-java,whichcanreadtablesfromPDFsandconvert themintoPandasDataFramespandas:toconstructandmanipulateourpaneldataItallowsyoutoparse,analyze,andconvertPDFdocumentspdflibforPython: AnextensionofthePopplerLibrarythatoffersPythonbindingsforitPDFQueryisaPythonlibrarythatprovidesaneasywaytoextractdatafromPDFfilesby usingCSS-likeInthisarticle,IamgoingtotalkabouthowtoscrapedatafromPDFusingPythonlibrary:tabula-pyHere,wewillusePDFQuerytoreadand extractdatafrommultiplePDFfilesImagebyPLewisetalThelibraryshouldbePython-only(hencenoC-extensions),butallowtochangethebackendYou alsouseattributeoftheDataFrametoseeitsdimensionalityThegoalistohaveamoderninterfacetohandlePDFfileswhichisconsistentwithitselfandtypical Pythonsyntax