雨课堂学堂在线学堂云《Python programming basics and project practices（重庆工商职业学院）》单元测试考核答案

第1题ThefollowingisnotafeatureofPython:（）AEasytolearnBOpen-sourceandfreeCLow-levelprogramminglanguageDHighportability第2题Inthefollowingoptions,()isnotaconstant.A'python'B8.25CpythonDTrue第3题ThestatementthatisincorrectaboutPythonmemorymanagementis:AVariablesdonotneedtobedeclaredinadvance.BVariablescanbeuseddirectlywithoutcreatingandassigningthemfirst.CVariablesdonotneedtospecifyatype.DResourcescanbereleasedusingdel.第4题Inthefollowingoptions,thebooleanvalueof()isnotFalse.ANoneB0C()D1第5题Incomputers,informationprocessingandstoragearedoneusing()ABinarycodeBDecimalcodeCHexadecimalcodeDASCIIcode第6题ThewayPythonsourcecodeisexecutedis()ACompiledexecutionBParsingexecutionCDirectexecutionDCompile-as-you-goexecution第7题Whichofthefollowingstatementsisincorrect?AAllstandardobjectsexceptdictionarytypescanbeusedforBooleantesting.BThebooleanvalueofanemptystringisFalse.CThebooleanvalueofanemptylistobjectisFalse.DThebooleanvalueofanynumberobjectwithavalueof0isFalse.第8题Thefollowingidentifiersarevalid:AhelloWorldB2ndObjChello#worldD_helloworld第9题Thefollowingsymbolrepresentsasingle-linecommentinPython:().A#B//CD"“"第10题Ifa=9andb=2,whichofthefollowingoperationsisincorrect?AThevalueofa+bis11B

Thevalueofa//bis4CThevalueofa%bis1DThevalueofa**bis18第11题ThefollowingdatatypesarenotsupportedinPython:AintBcharCfloatDdicitionary第12题WhichofthefollowingstatementsaboutcomplexnumberssinPythonisincorrect?AThesyntaxforrepresentingacomplexnumberisreal+imagejBBoththerealandimaginarypartsarefloating-pointnumbersCTheimaginarypartmustbesuffixedwithjandmustbelowercaseDThemethodconjugatereturnsthecomplexconjugateofacomplexnumber第13题Whichofthefollowingstatementsaboutstringsisincorrect?ACharactersshouldbeconsideredasstringsoflength1BStringsareterminatedbythe'\0'characterCStringscanbecreatedusingeithersinglequotesordoublequotesDSpecialcharacterssuchasnewlineandcarriagereturncanbeincludedintriple-quotedstrings第14题InPythonexpressions,()canbeusedtocontroltheorderofoperations.。A()B[]C{}D

第15题Pythonlanguagebelongsto()AMachinelanguageBAssemblylanguageChigh-levellanguage.DScientificcomputinglanguage第16题()Thebuilt-infunctionopen()cancorrectlyopenafileaslongasthefilepathiscorrect.第17题()Pythonusesautomaticmemorymanagementbasedonvalues.第18题()Samevaluesarenotalwayskeptinmemoryatthesametime.第19题()Pythondoesnotallowkeywordstobeusedasvariablenames.第20题()IfcannotbeusedasavariablenameinPython.第21题()ChinesecharacterscanbeusedasvariablenamesinPython3.x.第22题()Pythonvariablenamesmuststartwithaletterorunderscoreanddistinguishbetweenuppercaseandlowercaseletters.第23题()Theadditionoperatorcanbeusedtoconcatenatestringsandgeneratenewstrings.第24题()0o12fisnotavalidoctalnumber.第25题()OxadisavalidhexadecimalnumberrepresentationinPython.第26题()314jisavalidPythonnumerictype.第27题()TherearemultiplewaystocommentcodeinPython,notjustusingthecaretsymbol.第28题()Listscannotbeusedaskeysindictionaries.第29题()Tuplescanbeusedaskeysindictionaries.第30题()Theadditionoperator+inPython3.xcanperformnumericaladdition,stringconcatenation,listandtupleconcatenation,andsetunionoperations,butitcannotmergelistsandtuplesorperformsetunionoperations.第1题Thedescriptionerrorabouttheroleofthefunctionis().AStructuringprogrammingisthemostbasicencapsulationofcode,generallyorganizingaparagraphofcodeaccordingtofunction.BThepurposeoftheencapsulationistoreuseandreducethecode.CThecodeismorebeautifulandeasytoread.DNoneoftheaboveiscorrect第2题Pythonscriptfileisextendedasthe().ApythonBpyCptDpg第3题Inthetransferoffunctionparameters,thedescriptionofthe().Apythonimplementsthesafetyvaluetransferparameter,whichreferstothevalueoftheconstantvariable(realreference)whencallingthefunction.BRealparticipationparametersarestoredintheirrespectivememoryspaceandaretwounrelatedindependentvariables.CChangethevalueoftheshapeparameterwithintheparameter,andthevalueoftherealparametergenerallydoesnotchange.DThenameoftherealparticipationparametersmustbethesame.第4题The()functionisafunctionthatdirectlyorindirectlycallsthefunctionitselfArecurrenceBclosureClambdaDanonymous第5题Usethe()functiontoreceivetheinputdatausedAaccept()Binput()Creadline()Dlogin()第6题Regardingthedescriptionoftherecursivefunction,thecorrectoneinthefollowingoptionsisthe()AThefunctionnameservesasthereturnvalueBcontainsacircularstructureCFunctionsaremorecomplexDThefunctioncontainsasecondcalltothefunction第7题InPython,regardingthedescriptionofthefunction,thecorrectoneinthefollowingoptionsisthe()AThefunctioneval()canbeusedfornumericalexpressionevaluation,suchaseval("2*3+1")BPythonNotypeisspecifiedinthefunctiondefinition,whichmeansthattheparametercanberegardedasarbitraryinthefunction!makeuseofCOnlyonereturnstatementisallowedinafunctionDPython,defandreturnarethereservedwordsthatafunctionmustuse第8题Assumingthatglobalreservedwordsarenotincludedinthefunction,forthemethodtochangetheparametervalue,thefollowingoptionerroris()AChangethevalueoftheoriginalparameterwhentheparameteristhelisttypeBWhentheparameterisacombinationtype(variableobject),changethevalueoftheoriginalparameterCWhetherthevalueoftheparameterchangesisrelatedtotheoperationofthevariableinthefunction,regardlessoftheparametertypeDWhentheparameterisanintegertype,thevalueoftheoriginalparameterisnotchanged第9题Pythonbuilt-infunction,canreturnthelengthofobjects(characters,lists,tuples,etc.)orthenumberofitems()AdescribeBintClongDlen第10题The()isnotincludedinthefunctiondefinitionformatAkeywordsdefBfunctionnameCactualparameterDfunctionbody第11题Thefollowingstatementthatisincorrectisthatthe()AWhendefiningAfunction,theparameterofafunctiondoesnotrepresentanyspecificvalue,andonlywhenafunctioncalls,aspecificvalueisassignedtotheparameter.BTherandommodulemayget100byusingthefunctionrandint(1,100)CFunctionisawayofcodemultiplexingDThefunctionmustcontainaretur第12题Thefollowingincorrectstatementofthepythonfunctionisthe()TheApythonfunctiondoesnotrequirethefunctionnameTheBpythonfunctiondoesnotrequiredtospecifyaparameterdatatypeThereturnvalueoftheCpythonfunctioncanbemultipleThekeyworddefinedbytheDpythonfunctionisthedef第13题Inthefollowingoptions,thefunctiondefinitionerroristhe()Adefvfunc(*a,b)Bdefvfunc(a,b)Cdefvfunc(a,*b)Ddefvfunc(a,b=2)第14题PythonUnsupportedparametertype()AlocationparameterBDefaultparametersCvariableDTheinvariantparameter第15题ThebasicPythonbuilt-infunctioneval()is()A.Afloating-pointnumberB.RemovethestringBPythonexpressionevaluationC.CalculatethestringChexcharacterstringDtoEfromthemostlateralquotationmarksandreturnitsvalueasFasthevalueforthePythonstatementD.ConvertanintegerGto正确答案：G第16题()ThereturnvaluetypeofaPythonfunctiondoesnotneedtobespecifiedwhendefiningthefunction.第17题()Thereturnstatementinafunctionmaynotalwaysbeexecuted.第18题()ItisnotnecessarytodeclarethetypeoffunctionparameterswhendefiningafunctioninPython.第19题()Thenumberofactualargumentspassedwhencallingafunctiondoesnotnecessarilyhavetomatchthenumberoffunctionparameters.第20题()PositionalargumentsinPythonrefertopassingargumentstoafunctionwithoutanyadditionalexplanation,withmultipleactualargumentspassedsequentiallytocorrespondingformalparameters.Thenumberandorderofactualandformalparametersmustcorrespondexactly,otherwiseanexceptionwillbethrown.第21题()DefaultvalueparametersinPythonrefertosettingdefaultvaluesforsomeformalparameterswhendefiningafunction,andifactualargumentsarenotpassedfortheformalparametersthathavedefaultvalueswhencallingthefunction,thedefaultvaluesareused;ifactualargumentsarepassed,thoseargumentsareusedinstead.第22题()Onceafunctionisdefined,itcanbecalledanywhereintheprogram.第23题()Formalparametersareoptional,meaningafunctioncanincludeparametersornot,andmultipleformalparametersareseparatedbycommas.第24题()Functionsdonotnecessarilyimprovecodeexecutionspeed.第25题()Functionnamesfollowprogrammingconventions,startingwithalowercaseletterorunderscorefollowedbyanylengthofletters,numbers,underscores,etc.toformavalidfunctionname.第26题()Thefunctionbodyconsistsofaseriesofstatementsendingwithacolon,andtheremustbesomeindentationspacebetweenlineswithinthefunctionbodytoindicatethattheybelongtothefunctionbody.第27题()Keywordargumentscannotbepassedinanyorderandcannotbeomitted.第28题()Functionscanreturnvaluesofanytypetothecaller.第29题()Afunctioncallneedstoprovidetherequiredargumentsforthefunction,andthenumberofargumentsmustmatchthenumberdeclaredinthefunctiondefinition.第30题()Ifafunctiondoesnothaveareturnstatementorthereturnstatementdoesnothaveanyreturnvalue,thereturnvalueofthefunctionisNone.Practice3第1题Whichofthethreemajorobject-orientedfeaturesdoesnotincludethisfollowing?()ApackageBpolymorphicCconstructDinheritance第2题HowdoyoudefinetheprivatemethodinthePythonclass?()AAddprivatemodificationbeforemethodBAddtwounderlined__beforemethodCdeclarethefirstparametersettingofthemethodasselfDUseonlyprivatevariablesinthemethod第3题WhichofthefollowingstatementsistrueabouttheclassandinstancepropertiesofPython?()AClasspropertiescanbeaccessedbytheclassnameorinstancename.BClasspropertiescanbemodifiedbyeithertheclassnameorthepropertyname.CInstancepropertiescanbeaccessedthroughtheclassnameorinstancename.DInstancepropertiescanbemodifiedbytheclassnameorinstancename.第4题Whichofthefollowingcodedefinesthenameclasspropertycorrectly?()AclassMeeting:name="cqtbi"BclassMeeting:def__init__(self,name):=name;CclassMeeting:def__init__(self,id):name="cqtbi";DclassMeeting:="cqtbi"第5题PythonWhichkeywordisusedintheclassdeconstructionmethodinobject-orientedprogramming?()A__del__B__finish__C__delete__D__finalize__第6题Isthistherightwaytointroducethecustommodule?()Afrom

my_moduleimport

Studenttom=

my_module.Student('001',

'tom')

Bfrom

my_moduleimport

Studenttom=

Student('001',

'tom')

Cimport

my_moduletom=

Student('001',

'tom')Dimport

my_module.Studenttom=

Student('001',

'tom')第7题WhichofthefollowingstatementsiswrongabouttheparametersofthePythonfunction?()APositionparameterscannotbepassedmoreorless.BParameterswiththedefaultvaluesarethekeywordparameters.CTheindefinitelengthparametersshouldbeplacedattheendoftheparameterlist.DThedefaultparametersmustbeplacedbehindthepositionparameters.第8题Whichofthefollowinglambdaexpressionscorrectlydefinesanadditionfunction?Alambda

x,y:x+yBlambda(x,

y):

x+

yClambda

x,

y:

return

x+

yDlambda

x,

y=x+

y第9题Whichofthefollowingstandardmodulescanoperateonthefile?()AosBtimeCrandomDre第10题WhichofthefollowingregularexpressionsmatchestheIDcardnumber?()A\d[17]{\d|x|X}B\d{17}[\d|x|X]C\b[17]{\b|x|X}DCan't第11题IntheJavalanguage,0.6321isdataoftypefloat.()第12题re.searchThemethodscanstheentirestringandreturnsallsuccessfulmatches.()第13题Thederivedclassautomaticallycallstheconstructorofthebaseclass.()第14题PythonTopreferentiallyfindthecorrespondingmethodinthebaseclass,thebaseclassisnotfoundinthederivedclass.()第15题Theformalparameterofafunctionistheparameterdeclaredinparentheseswhendefiningafunction.()第16题Usingkeywordparameters,youcancallthemwithoutpassingthesequence.()第17题Whenyouusetheindefinitelengthparameter*argsintheparameterlist,theparametersareautomaticallyorganizedintoadictionaryincoming.()第18题ThePythonmoduleisessentiallyaPythonscriptfilethatcancontainvariables,functions,andclasses.()第19题Generatorsarespecialiteratorsthatexecutefromscratchoneverycall.()第20题TodefineafunctioninPython,youmustendwithreturnasthefunction.()Practice4第1题Whichofthefollowingcommandsistoinstallthird-partylibrariesinaPythondevelopmentenvironment?()AsetupByuminstallCpipinstallDimport第2题Whenusingawebcrawlertocrawldata,whatdoestheserverreturn503mean?()APagenotfoundBDeniedaccesstoCServerErrorDPageredirection第3题Inordertoallowthecrawlertoaccesstheserver,whichofthefollowingrequestheadsisusuallyrequired?()AAcceptBConnectionCUser-AgentDReferer第4题Ifyouneedtoopenafiletoreadandwrite,andifthefiledoesnotexist,whichreadandwritemodeisused?()ArBr+CwDw+第5题WhatistheXPATHsyntaxforgettingthenameofthedog(karl)oftypeHuskycorrectly,forthefollowingHTML?（B）<html>

<animal>

<dog

type="Husky">karl</dog>

<dog

type="Bulldog">momo</dog>

</animal>

</html>A//dog/@type="Husky"/textB//dog[@type="Husky"]/text()C//dog/@type="Husky"D/dog/@type="Husky"/text()第6题Whichofthefollowingerrorsdoestheserverreturn,usuallytriggeringthebackcrawlmechanism?()A301B403C503D200第7题Usingthecrawlertocrawltheserverdata,whichofthefollowingdocumentsshouldfollow?()Ahost.txtBrobots.txtCrule.txtDallow.txt第8题InPython,whichfunctionofpymyslisusedtoconnecttotheMySQLdatabase?()AopenBconnectCcreateDget第9题Whichofthefollowingthird-partymodulesiscommonlyusedforPythondataanalysis?()APandas

BScrapyCBeautifulSoupDlxml第10题WhenyouneedtowriteChinesetoafile,whichofthefollowingparametersisusuallyaddedwhenopeningthefile?()AenforceBencodingCdecodeDlocalization第11题Thesuccessofwebscrapingcanbedeterminedbycheckingthecodeattributeoftheresponseobject.()第12题InPython,theopenfunctionisusedtoopenfiles,andthefilemodesusuallyinclude"r","w","a","x",etc.()第13题Usingthe"r+"modetoopenafilemeansthatyoucanreadfromitaswellasappendcontent.(()第14题CSVfilestypicallyusethetabcharacter\ttoseparatedifferentfieldsinarow.()第15题Bydefault,Pythonopensfilesinbinaryformat.()第16题Whenafileisopenedusingthewithkeyword,youdonotneedtomanuallycalltheclosemethod.()第17题XMLdocumentswitherrorscannotbeparsedusinglxml.()第18题Whenthecontentofafileisverylarge,weshouldusetheread()methodtoreadit.()第19题Whenwritingtoafileusingthefile.write()function,youneedtomanuallyaddanewlinecharacterattheendoftheline.()第20题Usingbuilt-instandardlibrariesinPythondoesnotrequireimportingthem.()Practice5第1题InregularexpressionmatchinginPython,thedefaultmodeisgreedy.

()第2题Lambdaexpressionsareoftenusedtowritefunctionsthatneedtobecalledrepeatedly.

(

)第3题Thekeyof3Ddynamicfacerecognitiontechnologyliesinusinghigh-precision3Dfull-facecameratoobtainthethree-dimensionalgeometricfeaturesandblack-and-whitetexturefeaturesoftheface.(

)第4题Errorsencounteredwhenwritingprogramscanberoughlydividedintotwocategories:syntaxerrorsandruntimeerrors.()第5题InXPath,anXMLdocumentistreatedasanodetree,andtherootofthetreeiscalledtherootnode.

()第6题

PressF10onthebrowserpagetoopendevelopermode.

(

)第7题Therobotsprotocolisusedtotellwebsiteshowtoidentifyvisitorsaseitherhumanorrobot(application).()第8题Thevalueoftheexpressionlen(range(1,9))is9.

(

)第9题InPythonprogramming,theexceptionsthatarethrownbyyourselfarecalledcustomexceptions.

()第1