What is the difference between __init__ and __call__?

In Python, __call__() is used to resolve the code associated with a callable object. Any object can be converted to a callable object just by ... 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DunderormagicmethodsinPythonarethemethodshavingtwoprefixesandsuffixunderscoresinthemethodname.Dunderheremeans“DoubleUnder(Underscores)”.Thesearecommonlyusedforoperatoroverloading.Fewexamplesformagicmethodsare:__init__,__add__,__len__,__repr__etc.Inthisarticle,wearegoingtoseethedifferencebetweentwosuchmethods.Note:Formoreinformation,refertoDunderormagicmethodsinPython__init__()ThisPythonmethodissimilartoaconstructorinanyotherprogramminglanguage.Aconstructorisadefinitionwiththesamenameastheclassandisinvokedautomaticallywhentheobjectofthatclassisdefined.Aconstructorinitializesalltherequiredentitiesoftheprogramtomakeitmorereliable.Similartothisdefinition__init__()worksasaPythonconstructoritisinvokedautomaticallywhenanobjectoftheclassisdefined.Itinitializestherequiredmemberswithdefaultvaluesprovided.Itcanalsobeinvokedwiththevaluesprovidedduringthetimeofdeclarationoftheobjectoftheclass.EXAMPLE:classA:    def__init__(self,x):        print("inside__init__()")        self.y=x      def__str__(self):        print("inside__str__()")        print("valueofy:",str(self.y))  #declarationofinstanceofclassAa=A(3)  #calling__str__()forobjectaa.__str__()  #declarationofanotherinstance #ofclassAb=A(10)  #calling__str__()forbb.__str__()OUTPUT:inside__init__() inside__str__() ('valueofy:','3') inside__init__() inside__str__() ('valueofy:','10') __call__()Beforegettingintoapplicationof__call__()weneedtounderstandwhatacallableobjectis.Acallableobjectisonewhichcanbecalledlikeafunction.InPython,__call__()isusedtoresolvethecodeassociatedwithacallableobject.Anyobjectcanbeconvertedtoacallableobjectjustbywritingitinafunctioncallformat.Anobjectofthatkindinvokesthe__call__()methodandexecutesthecodeassociatedwithit.Thisdoesn’tmaketheobjectnottoworklikeanormalone.Theobjectcanbeusedasanormalisused.Onethingtokeepinmindistheobjectisitselfusedasafunction,sosyntaxshouldberight.EXAMPLE:classA:    def__init__(self,x):        print("inside__init__()")        self.y=x      def__str__(self):        print("inside__str__()")        print("valueofy:",str(self.y))      def__call__(self):        res=0        print("inside__call__()")        print("adding2tothevalueofy")        res=self.y+2        returnres                  #declarationofinstanceofclassAa=A(3)  #calling__str__()foraa.__str__()  #calling__call__()fora r=a()print(r)  #declarationofanotherinstance#ofclassAb=A(10)  #calling__str__()forbb.__str__()  #calling__call__()forbr=b()print(r)OUTPUT:inside__init__() inside__str__() ('valueofy:','3') inside__call__() adding2tothevalueofy 5 inside__init__() inside__str__() ('valueofy:','10') inside__call__() adding2tothevalueofy 12Differencebetween__init__()VS__call__()__init__()__call__()Sameasaconstructor,itinitializesthevaluesItisusedforadirectcallusingtheobjectItisinvokedautomaticallywhenanobjectisdeclaredItisinvokedautomaticallybyacallableCalledbyanregularobjectCalledbyacallableobjectExample:a=A(3)#statement1a()#statement2__init__()iscalledbystatement1Example:a=A(3)#statement1a()#statement2__call__()iscalledbystatement2MyPersonalNotes arrow_drop_upSave LikePreviousPyQt5-AccessthesizeofStatusBarNext PyQt5-AddpaddingtoStatusBarRecommendedArticlesPage:27,Jan2015,Apr1909,Nov1804,Dec1923,Dec1921,Jan2024,Feb2005,May2025,Jul2002,Apr2018,Dec1722,Jun2001,Aug1807,Jan1909,Jan2112,Aug1927,Jul2114,Jan2020,Jan2026,Feb2024,Feb2005,Mar2007,May2030,Mar20ArticleContributedBy:vanshikagoyal43@vanshikagoyal43VotefordifficultyEasy Normal Medium Hard 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