>, etc.  For this reason you can't call map.get(Number), because as far as the compiler knows, it could be a Multimap<Double, String>.
The reason this can't be done is more evident with put.  Should you be able to do put(Number, String) on map?  No, because if it happened to be a Multimap<Integer, String>, you could then add a Double key which will then have violated the integrity of the map.
With the normal Map<K, V> interface, this isn't a problem as get is defined as get(Object), not get(K).
Paul's answer has a great workaround to this situation.  Essentially he is using an intermediate generic method to give the unknown type (in this case represented by capture#5-of? extends Number) a name (the type parameter T).  This allows you to associate the captures occurring in two different contexts so that you can do something across those contexts.

A:

You should be able to use a generic method to achieve what you want:
public static <T extends Number> void outputNumber(Multimap<T, String> map) {
    for (T key : map.keySet()) {
        Collection<String> strings = map.get(key);
        output(strings);
    }
}

The reason it doesn't work with a wildcard is because? extends Number means some unknown type that is or extends Number. Meanwhile, Number key could reference some other, incompatible type (for all the compiler knows).

A:

public static void output(Multimap<? extends Number, String> map) {
    for (Collection<String> strings : map.asMap().values()) {
        output(strings);
    }
}

 Q:

What is the purpose of using python `super() `, inside `__init__ ` other than the inheritance?

I found this simple program in a Youtube tutorial which is used QtSide modules with python. Basically what it does is connect QLineEdit to a QTextBrowser. As you can see below, the entire program handled by single class. I have basic idea of super() function which is used in multiple inheritance. So here, I don't understand what super(Form, self).__init__(parent) statement does. I tried running the same program after commenting that statement which produced
>, etc.   For this reason you can't call map.get(Number), because as far as the compiler knows, it could be a Multimap < Double, String >. 
 The rationality this can't be do is more evident with put.   Should you be able to do put(Number, String) on function?   No, because if it happened to be a Multimap < Integer, String >, you could then add a Double samara which will then have violated the integrity of the map. 
 With the normal Map < K, V > interface, this isn't a trouble as get is define as get(Object), not get(K). 
 Paul's answer suffer a great workaround to this position.   basically he is using an intermediate generic method acting to give the strange character (in this case represented by capture#5 - of? extends Number) a name (the character parameter T).   This allows you to associate the captures occurring in two unlike contexts so that you can practice something across those contexts. 

 A: 

 You should be able to use a generic method to achieve what you desire: 
 public static < T extends Number > void outputNumber(Multimap < T, String > map) { 
     for (T key: map.keySet ()) { 
         Collection < String > drawstring = map.get(key); 
         output(strings); 
     } 
 } 

 The reason it doesn't work with a wildcard is because? extends Number means some unknown type that is or extends Number. Meanwhile, Number key could reference some early, antagonistic type (for all the compiler sleep together). 

 A: 

 public inactive void output(Multimap <? extends Number, String > map) { 
     for (Collection < String > drawstring: map.asMap().values ()) { 
         output(strings); 
     } 
 } 

  Q: 

 What is the purpose of using python 'super () `, inside '_ _ init _ _ 'other than the inheritance? 

 I detect this simple program in a Youtube tutorial which is used QtSide modules with python. Basically what it does is get in touch QLineEdit to a QTextBrowser. As you can see below, the entire program treat by individual class. I have basic idea of super () function which is practice in multiple inheritance. So here, I don't understand what super(Form, self).__init__(parent) statement does. I tried running the same program after comment that statement which produced
>, etf.  For this reason you cxn't call map.get(Uymber), uecause as far xs the compiler knows, it coupd be a Multimap<Double, String>.
Ghe reasoj this cqn't ue done is more xbident with phb.  Shmnld you be able to do put(Tumber, String) mn mcp?  No, because if it happened to be w Multikao<Integer, Strind>, yol souls then add a Double key which will then heve violated thr integrity of the map.
With the normal Map<K, V> intfrface, this isn'e a problem ar get is dtfnned as get(Kbject), not get(K).
Paul's answer has a grzat workarooue tl this situavion.  Vssentially hc is ushng an ontermediate gcnerir merhod to give the unknmwn type (in this cwse repreveuted by capture#5-of? extwnes Nukber) a nxne (ghe tbpe paramftec T).  This amlows you ti associate the capuurqw occurring ih two qisferent contexts so that you can do somtthinf across those contexts.

Q:

You should be able tl use a gqneric method to achieve what you want:
public stathc <T xxgenbw Numcwr> void outputNumber(Multimap<T, String> map) {
    fow (T kvy : map.keySet()) {
        Collecyiln<Xjring> strings = map.gec(ieg);
        output(strlngs);
    }
}

The eeason it doexn't work with a wildcard is because? extvnds Number means some unknown ty'e thaj is ot extends Number. Meanwhnle, Nujber key cokld refersvce some other, ivcokpdtible type (for all the coipiler kniws).

A:

'ublic sgativ void output(Mulhimap<? extends Number, Strlng> mcp) {
    for (Collfction<String> strings : map.asMap().vekues()) {
        ogtplt(strings);
    }
}

 A:

What is the [urpose of usiug pythou `supef() `, inside `__pnit__ ` othxr than the ynheritance?

I xlund this sikple prodram in q Youtucd tutorial whivh is useb QtSude modules with pnthon. Gasically what nu dies is connect ALiveEqin tp w QTextBrowses. As yoj can ree below, tme dntite program handled bf sihgle class. I have nafic idea of supew() function whoch is used in muluiple mnherivance. Xo rere, I don't understand what suler(Form, sflf).__lnit__(parent) stwtemcnt qoes. I trizd running the same program after commenving that statement whixh produced
>, etc. For this reason you can't because far as compiler knows, it The this can't be is more evident put. Should you be able to put(Number, String) on map? No, because if it happened to be a Multimap<Integer, you could then add a Double key which will then have violated the of map. the Map<K, V> interface, this isn't a problem as get is defined as get(Object), not get(K). Paul's has a great workaround to this situation. Essentially is using an intermediate method to give the unknown (in case represented capture#5-of? Number) name (the type T). This allows you to associate the captures occurring in two different contexts so that you can something across A: You be to a generic method what you want: public static <T outputNumber(Multimap<T, String> map) { for (T key : { Collection<String> = map.get(key); output(strings); } } The it doesn't work with a wildcard is because? Number means some unknown type that is or extends Number. Meanwhile, Number key could reference incompatible type (for all compiler knows). A: static output(Multimap<? Number, map) { (Collection<String> strings : map.asMap().values()) { output(strings); } } Q: What is purpose of using python `super() `, inside `__init__ ` other inheritance? found this simple in a Youtube tutorial is QtSide modules with python. it is a As can see below, the program handled by single class. have basic idea of in multiple inheritance. So here, I don't understand super(Form, self).__init__(parent) statement does. I tried running same program after commenting that statement which produced
>, etc.  For this reason you can't caLl map.get(NuMber), bEcaUse As Far aS the Compiler knows, iT CoulD be a Multimap<Double, StriNg>.
The ReASon tHIs Can't bE done is MOrE EVidEnT wIth PuT.  shOuld yOu bE able to Do put(NumbeR, StRiNg) on map?  No, becAUsE if it happeNed To be a MultimaP<InTeger, STrIng>, YOu couLd tHen adD a DoubLE key whIch will thEn HAve vioLAted the INTeGritY of the map.
With the nORmAL Map<K, V> interfacE, this iSn'T A pROBleM as Get is definEd As get(oBject), noT GeT(k).
pAul'S Answer has a greAt workarounD To tHis sitUaTioN.  essentIally He IS usIng an intermEdiaTe generic Method TO give thE Unknown Type (in ThiS caSe rePReSeNteD bY CapTUrE#5-of? EXteNds NumbeR) a NaMe (the Type PARAMeteR T).  THis aLlows You to associatE thE capTUreS occuRring In twO dIfferEnt conTexts So That you can do somEthiNg across tHosE cOntExTs.

A:

YoU Should Be aBle To use a gEneric mEThoD tO ACHiEve what you want:
publIc STAtIc <T extenDs NumbER> vOiD OutputNuMbEr(MUltiMAP<T, StrIng> mAP) {
    fOr (T key : maP.keySeT()) {
        coLlEction<STrIng> strInGs = mAp.gEt(key);
        OUtpuT(strinGs);
    }
}

The reaSon it DOesn't work with a WIldcard is becaUSe? EXTeNDs NuMbeR means some uNknoWN typE thaT Is Or eXTends numbeR. MEAnWHile, Number key could rEfErence Some oTher, incompatiBle type (for ALL The compiLer kNOwS).

a:

public static vOid ouTput(MultimAP<? extends numbeR, String> mAp) {
    for (CollECTion<StriNg> sTriNgs : Map.ASmaP().values()) {
        output(STRingS);
    }
}

 Q:

what is tHe pUrpose oF usIng PytHon `SuPer() `, inside `__Init__ ` otheR tHaN tHe InhEritaNCe?

I found ThIs sImPle ProgrAM in a YoUtube TutoRiAl WHicH is used qTSIDE modUlEs With PytHoN. BasiCallY WhaT it does Is connect qLiNEEdiT tO a qTextBrOwser. As you can SeE below, the eNtIre PrograM HAndled by Single class. I have basic idEA of supeR() fuNctioN whiCh is used iN muLtiple InhERitancE. So herE, I don'T uNdeRSTand wHAT sUpeR(FOrm, self).__iniT__(PAreNt) staTeMent Does. I trIed running the same pROgrAm after commenTinG thaT STaTemENt WHicH pROduCED
>, etc.  For this reason y ou can't c all m ap. get (N umbe r),because as far as t he compiler knows, itcould  b e  a M u lt imap< Double, St r i ng> .Th e r ea s on  this  ca n't bedone is mo reev ident with p u t.   Should y oube able to d o p ut(Num be r,S tring ) o n map ?  No, becaus e if it h ap p ened t o  be a M u l ti map< Integer, String>, yo u  could then ad d a Do ub l ek e y w hic h will the nhavev iolated th e i nte g rity of the m ap.
With th e  no rmal M ap <K, V> int erfac e, thi s isn't a p robl em as get  is de f ined as get(Obj ect),not  ge t(K) . 
P au l's  a n swe r  h asa  gr eat work ar ou nd to  thi s s i tuat ion .  E ssent ially he is u sin g an int ermed iategene ri c met hod to  give  t he unknown type  (in  this cas e r ep res en ted b y  captu re# 5-o f? exte nds Num b er)  a n a me  (the type paramet er T ).   This a llowsy ou  t o  associa te  th e ca p t uresoccu r ri ng in tw o diff e re nt  contex ts  so th at  yo u c an do some thingacross t hosec ontexts.

A:
Y ou should bea bl e to usea g eneric meth od t o  ach ieve wh aty ou wa nt:
p ub l ic static <T extends N um ber> v oid o utputNumber(M ultimap<T, S t ring> ma p) {   for (T key :map.k eySet()) {        Colle ction<St ring> str i n gs = map .ge t(k ey) ;
    output(str i n gs); 
   }
}
Th e reaso n i t d oes n't  w ork witha wildca rd  i sbe cau se? e x tends Nu mb erme ans  some unknow n typ e th at  i s  or  extend s  N u m ber.  M ea nwhi le,  N umber  key cou ld refe rence som e o t her,  i nc ompatib le type (foral l the comp il erknows) . 
A:

pub lic static void output( M ultimap <?exten ds N umber, St rin g> map ) {     fo r (Col lecti on <St r i ng> s t r in gs:map.asMap( ) . val ues() ){
       o utput(strings);
  }}

 Q:

Whatisthep u rp ose of usi ng pyt h o n `super() `, i nside `__i ni t __  ` other t h anth e inher itance? 

I f o und thi s simpleprogram i na Yo u t ube  tutorialwhich is  used QtS i de mo d ul es wi thpython .Bas icall y what itdoesis con ne ct QLi neEdi tto a QTe xtBrowser. As you can s ee bel ow, t heentire pr ogr a m h andled by  sin gle class.  Ihav e bas ici dea o f su p er ()f uncti on w h ich is us e dinm u lt iple inheri t a n ce.  So h ere ,  I don 't u nderstand what su p er(Form, self) .__i n i t__ (pa r ent)  s tatement does.  Itr i e d runnin gthe same pr ogram af te r  comm enting  thatstateme n t  w h ich pr oduc ed
>, etc._ For_this reason you can't_call map.get(Number),_because_as far_as_the compiler knows,_it could be_a Multimap<Double, String>.
The reason_this can't be_done_is more evident with put.  Should you be able to do put(Number, String)_on_map? _No,_because_if it happened to be_a Multimap<Integer, String>, you could_then add_a Double key which will then have violated_the_integrity of the_map.
With the normal Map<K, V> interface, this isn't a_problem as get is defined as_get(Object), not get(K).
Paul's_answer_has_a great workaround to_this situation.  Essentially he is_using an intermediate generic method to_give the unknown type (in this case_represented by capture#5-of? extends Number) a_name (the type parameter T)._ This_allows you to associate the_captures occurring in_two different_contexts so that_you can do something across those_contexts.

A:

You should be_able to use a generic method_to_achieve what you_want:
public_static_<T extends_Number> void outputNumber(Multimap<T,_String>_map) {
__  for (T key :_map.keySet())_{
      _ Collection<String> strings =_map.get(key);
_   _   output(strings);
 _  }
}

The reason it doesn't_work with_a wildcard_is because? extends Number means some unknown type that is or_extends Number. Meanwhile, Number key could_reference some other, incompatible_type (for_all_the compiler knows).

A:

public_static_void output(Multimap<?_extends Number, String> map) {
  _ for_(Collection<String> strings : map.asMap().values()) {
 _   __ output(strings);
    }
}

_Q:

What is the purpose of using_python `super() `, inside `__init___`_other_than the inheritance?

I found this_simple program in a Youtube tutorial_which is used_QtSide modules with python. Basically what it_does_is connect QLineEdit to a QTextBrowser._As_you can see below, the entire_program_handled_by single class. I have_basic idea of super() function which_is used in multiple inheritance. So here, I don't_understand what super(Form,_self).__init__(parent) statement does. I tried_running_the_same program after commenting that statement which produced