Exam:PCPP-32-101
Title:
PCPP1-Certified
ProfessionalinPython Programming1
https://www.passcert.com/PCPP-32-101.html
DownloadthelatestPCPP-32-101examdumpstopassyourexameasily
1.Whichofthefollowingconstantswillbeusedifyoudoriotdefinethequotingargumentinthewriter methodprovidedbythecsvmodule?
A.csv.QUOTEMINIMAL BcsvQUOTENONE
CsvQUOTEALL
DcsvQUOTENONNUMERIC
Answer:A
Explanation:
Ifyoudonotdefinethequotingargumentinthewritermethodprovidedbythecsvmodule,thedefault quotingbehaviorissettoQUOTEMINIMALThismeansthatfieldscontainingspecialcharacterssuch asthedelimiterornewlinecharacterwillbequoted,whilefieldsthatdonotcontainspecialcharacterswill notbequoted.
Reference:OfficialPythondocumentationonthecsvmodule:https://docspythonorg/3/library/csvhtml
2Whatistrueabouttheunbindall()method?
(Selecttwoanswers.)
AItcanbeinvokedfromanywidget
B.Itcanbeinvokedfromthemainwindowwidgetonly
CItisparameterless
DItcausesallthewidgetstodisappear
Answer:A,C
Explanation:
Theunbindall()methodinTkinterisusedtoremovealleventbindingsfromawidgetItisamethodof thewidgetobjectandcanbecalledonanywidgetintheTkinterapplicationTherefore,optionAisthe correctanswer
OptionBisincorrectbecausethemethodcanbecalledonanywidget,notjustthemainwindowwidget OptionCiscorrectasunbindall()doesnottakeanyparameters
OptionDisincorrectbecausethemethodonlyremoveseventbindingsanddoesnotcausethewidgetsto disappear.
So,thecorrectanswersareAandC
References:
✑Tkinterdocumentation:https://docs.python.org/3/library/tkinter.html#event-bindings
✑Tkintertutorial:https://wwwpython-courseeu/tkintereventsbindsphp
Ane()isnotabuilt-inspecialmethod
BThecodeiserroneous
DownloadthelatestPCPP-32-101examdumpstopassyourexameasily
C.Thecodeisresponsibleforthesupportofthenegationoperatore.g.a=-a.
DThecodeisresponsibleforthesupportoftheinequalityoperatoriei=
Answer:D
Explanation: Thecorrectansweris
DThecodeisresponsibleforthesupportoftheinequalityoperatoriei!=jInthegivencodesnippet, thenemethodisaspecialmethodthatoverridesthebehavioroftheinequalityoperator!=for instancesof
theMyClassclassWhentheinequalityoperatorisusedtocomparetwoinstancesofMyClass,the nemethodiscalledtodeterminewhetherthetwoinstancesareunequal
4.Analyzethefollowingsnippetandselectthestatementthatbestdescribesit.
A.Thecodeisanexampleofimplicitlychainedexceptions.
BThecodeiserroneousastheOwnMathclassdoesnotinheritfromanyExceptiontypeclass C.Thecodeisfineandthescriptexecutionisnotinterruptedbyanyexception.
DThecodeisanexampleofexplicitlychainedexceptions
Answer:D
Explanation:
Inthegivencodesnippet,aninstanceofOwnMathexceptionisraisedwithanexplicitlyspecified causeattributethatreferstotheoriginalexception(ZeroDivisionError)Thisisanexampleof explicitlychainingexceptionsinPython
5Analyzethefollowingsnippetanddecidewhetherthecodeiscorrectand/orwhichmethodshouldbe distinguishedasaclassmethod
A.Thereisonlyoneinitializer,sothereisnoneedforaclassmethod.
BThegetNumberofCrosswords()methodshouldbedecoratedWith@classmethod
C.Thecodeiserroneous.
DThegexNumberOfcrosswords()andissrivedmethodsshouldbedecoratedwith@classzoechod
Answer:B
Explanation:
ThecorrectanswerisBThegetNumberofCrosswords()methodshouldbedecoratedwith@classmethod Inthegivencodesnippet,thegetNumberofCrosswordsmethodisintendedtobeaclassmethodthat returnsthevalueofthenumberofcrosswordsclassvariableHowever,themethodisnotdecoratedwith the@classmethoddecoratoranddoesnottakeaclsparameterrepresentingtheclassitselfTomake getNumberofCrosswordsaproperclassmethod,itshouldbedecoratedwith@classmethodandtakea clsparameterasitsfirstargument
BThegetNumberofCrosswords()methodshouldbedecoratedwith@classmethodThisisbecausethe getNumberofCrosswords()methodisintendedtoaccesstheclass-levelvariablenumberofcrosswords,
DownloadthelatestPCPP-32-101examdumpstopassyourexameasily
butitisdefinedasaninstancemethod,whichrequiresaninstanceoftheclasstobecreatedbeforeitcan becalledTomakeitworkasaclass-levelmethod,youcandefineitasaclassmethodbyaddingthe @classmethoddecoratortothefunction.
Here'sanexampleofhowtodefinegetNumberofCrosswords()asaclassmethod:
classCrossword:
numberofcrosswords=0
definit(self,author,title):
selfauthor=author
selftitle=title
Crosswordnumberofcrosswords+=1 @classmethod
defgetNumberofCrosswords(cls): returnclsnumberofcrosswords
Inthisexample,getNumberofCrosswords()isdefinedasaclassmethodusingthe@classmethod decorator,andtheclsparameterisusedtoaccesstheclass-levelvariablenumberofcrosswords
Reference:OfficialPythondocumentationonClasses:https://docs.python.org/3/tutorial/classes.html
6.Selectthetruestatementsaboutthesqlite3module.(Selecttwoanswers.)
AThefetchaltmethodreturnsNonewhennorowsareavailable
BTheexecutemethodallowsyoutoperformseveralqueriesatonce
CTheexecutemethodisprovidedbytheCursorclass
DThefetchonemethodreturnsNonewhennorowsareavailable
Answer:C,D
Explanation:
CTheexecutemethodisprovidedbytheCursorclass
ThisstatementistruebecausetheexecutemethodisoneofthemethodsoftheCursorclassinthe sqlite3moduleTheCursorclassrepresentsanobjectthatcanexecuteSQLstatementsandfetchresults fromadatabaseconnectionTheexecutemethodtakesanSQLqueryasanargumentandexecutesit againstthedatabase.Forexample,cur=conn.cursor();cur.execute(“SELECT*FROMtable”)creates andexecutesacursorobjectthatselectsallrowsfromatable
D.ThefetchonemethodreturnsNonewhennorowsareavailable
ThisstatementistruebecausethefetchonemethodisanothermethodoftheCursorclassinthesqlite3 module.Thefetchonemethodfetchesthenextrowofaqueryresultsetandreturnsitasasingletupleor NoneifnomorerowsareavailableForexample,row=curfetchone()fetchesandreturnsonerowfrom thecursorobjectorNoneiftherearenomorerows.
7Whatistrueabouttheinvocationofthecget()method?
AItcanbeusedtoreadwidgetattributes BIthasthesameeffectastheconfig()method
CItcanbeusedtosetnewvaluestowidgetattributes
DItcanbereplacedwithadictionary-likeaccessmanner
Answer:A