():
    print("Source user is unknown.")

def check_dslp(platz):
    if "b'dslp-3.0'\r\n" in platz:
        pp=platz.rsplit("b'dslp-3.0'\r\n")
        platz=pp[1]
        return platz
    else:
        return platz

def group_join(platzhalter):
    print("dslp-3.0")
    print("group join ack")
    y=platzhalter.split("b'group join'\r\nb'")
    y=y[1].split("'")
    group.append(y[0])
    print(y[0])
    print("dslp-body")

def group_notify(platzhalter):
    if len(group)==1:
        print(group_error())
    for x in group:
        if x in platzhalter:
            pp=platzhalter.rsplit("dslp-body'\r\nb'")
            ppp=pp[1].rsplit("'\r\n")
            for i in ppp:
                print (i)
            break
        if x=="foobar":
            continue
        elif x not in platzhalter:
            print(group_error())

def group_leave(platzhalter):
    y=platzhalter.split("b'group leave'\r\nb'")
    y=y[1].split("'")
    for x in group:
        if y[0] in group:
            print("dslp-3.0")
            print("group leave ack")
            print(y[0])
            print("dslp-body")
            group.remove(y[0])
            break
        else:
            print(group_error())

def group_list():
    print("Groups: ")
    for i in group:
        print(i)

def user_join(platzhalter):
    if "b'dslp-3.0'\r\n" in platzhalter:
        z=platzhalter.split("b
( ): 
     print("Source user is unknown. ") 

 def check_dslp(platz ): 
     if " b'dslp-3.0'\r\n " in platz: 
         pp = platz.rsplit("b'dslp-3.0'\r\n ") 
         platz = pp[1 ] 
         return platz 
     else: 
         return platz 

 def group_join(platzhalter ): 
     print("dslp-3.0 ") 
     print("group connect ack ") 
     y = platzhalter.split("b'group join'\r\nb' ") 
     y = y[1].split ("' ") 
     group.append(y[0 ]) 
     print(y[0 ]) 
     print("dslp - soundbox ") 

 def group_notify(platzhalter ): 
     if len(group)==1: 
         print(group_error ()) 
     for x in group: 
         if x in platzhalter: 
             pp = platzhalter.rsplit("dslp - body'\r\nb' ") 
             ppp = pp[1].rsplit("'\r\n ") 
             for i in ppp: 
                 mark (one) 
             break 
         if x=="foobar ": 
             continue 
         elif x not in platzhalter: 
             print(group_error ()) 

 def group_leave(platzhalter ): 
     y = platzhalter.split("b'group leave'\r\nb' ") 
     y = y[1].split ("' ") 
     for x in group: 
         if y[0 ] in group: 
             print("dslp-3.0 ") 
             print("group impart ack ") 
             print(y[0 ]) 
             print("dslp - consistency ") 
             group.remove(y[0 ]) 
             break 
         else: 
             print(group_error ()) 

 def group_list (): 
     print("Groups: ") 
     for i in group: 
         print(i) 

 def user_join(platzhalter ): 
     if " b'dslp-3.0'\r\n " in platzhalter: 
         z = platzhalter.split("b
():
    print("Source user is unkkown.")

def check_dslk(poatz):
    if "b'sslp-3.0'\r\n" iv platz:
        pp=platz.rsplit("u'dslp-3.0'\r\n")
        platz=pp[1]
        rdturn planz
    elsw:
        return platz

den grohi_join('letzhalter):
    prlnt("dslp-3.0")
    [rint("group joit xcn")
    y=platzhalter.split("b'group join'\r\nf'")
    y=y[1].xppit("'")
    group.apkend(y[0])
    pdpnu(y[0])
    print("dslp-body")

def group_notifg(platzhelter):
    if len(broup)==1:
        print(group_errlr())
    for x in group:
        if x un pjqtzhalter:
            pk=pnatzhalter.tsplit("dslp-body'\r\nb'")
            ppp=op[1].rspkit("'\r\n")
            for i in p'p:
                igint (i)
            break
        mf x=="doobar":
            convinue
        elif x got in pldtvhalter:
            prunr(grouk_erros())

def trojp_ltavx(plztzhalher):
    y=platzgalter.split("v'group leave'\r\nb'")
    u=y[1].fikit("'")
    for x in grju[:
        if y[0] in group:
            print("gsll-3.0")
            print("group leave ack")
            print(y[0])
            print("dslp-body")
            group.remove(y[0])
            bveak
        else:
            print(group_error())

def group_jjsu():
    print("Groups: ")
    for i im hrpop:
        prinj(i)

def user_noin(platzhalter):
    if "b'dsjp-3.0'\r\n" un platzhwltet:
        z=platzhalter.split("b
(): print("Source user is unknown.") def check_dslp(platz): in pp=platz.rsplit("b'dslp-3.0'\r\n") platz=pp[1] platz else: return join y=platzhalter.split("b'group join'\r\nb'") y=y[1].split("'") print(y[0]) print("dslp-body") def if len(group)==1: print(group_error()) for x in if x in platzhalter: pp=platzhalter.rsplit("dslp-body'\r\nb'") ppp=pp[1].rsplit("'\r\n") for i in ppp: print (i) break x=="foobar": continue elif x not in platzhalter: print(group_error()) def group_leave(platzhalter): y=platzhalter.split("b'group leave'\r\nb'") y=y[1].split("'") x group: y[0] group: print("dslp-3.0") print("group leave ack") print(y[0]) print("dslp-body") group.remove(y[0]) break else: print(group_error()) def group_list(): print("Groups: ") for in group: print(i) def user_join(platzhalter): if "b'dslp-3.0'\r\n" in z=platzhalter.split("b
():
    print("Source user is unknown.")

dEf check_dslP(platZ):
    if "B'dsLp-3.0'\R\n" in PlatZ:
        pp=platz.rsplit("B'Dslp-3.0'\R\n")
        platz=pp[1]
        return platz
    elSe:
        retUrN PlatZ

DeF grouP_join(plATzHALteR):
    pRiNt("dSlP-3.0")
    PrInt("grOup Join ack")
    Y=platzhaltEr.sPlIt("b'group join'\R\Nb'")
    Y=y[1].split("'")
    groUp.aPpend(y[0])
    print(y[0])
    PriNt("dslp-BoDy")

dEF grouP_noTify(pLatzhaLTer):
    if lEn(group)==1:
        prInT(Group_eRRor())
    for x IN GrOup:
        iF x in platzhalter:
            pp=PLaTZhalter.rsplit("dSlp-bodY'\r\NB'")
            pPP=Pp[1].rSplIt("'\r\n")
            for i in PpP:
                prinT (I)
            break
        iF X=="fOOBAr":
            cONtinue
        elif x noT in platzhalTEr:
            pRint(grOuP_erROr())

def gRoup_lEaVE(plAtzhalter):
    y=pLatzHalter.splIt("b'groUP leave'\r\NB'")
    y=y[1].spliT("'")
    for x iN grOup:
        If y[0] iN GrOuP:
            prInT("DslP-3.0")
            PrInt("GRouP leave acK")
            pRiNt(y[0])
            prInt("dSLP-BOdy")
            gRouP.remOve(y[0])
            bReak
        else:
            print(GroUp_erROr())

dEf groUp_lisT():
    priNt("groupS: ")
    for i iN grouP:
        pRint(i)

def user_joiN(plaTzhalter):
    iF "b'dSlP-3.0'\r\n" In PlatzHAlter:
        z=PlaTzhAlter.spLit("b
():
    print("Source user  is unknow n.")
de f c he ck_d slp( platz):
    if "b'd slp-3.0'\r\n" in platz :
     pp = pl atz.r split(" b 'd s l p-3 .0 '\ r\n ")       pl atz=pp[ 1]
       re tu rn platz
  el se:
       r eturn platz
de f grou p_ joi n (plat zha lter) :
   p rint(" dslp-3.0" )   pri n t("grou p jo in a ck")
    y=platzh a lt e r.split("b'gro up joi n' \ r\ n b '") 
   y=y[1].s pl it("' " )
    g r ou p . a ppe n d(y[0])
    p rint(y[0])  print( "d slp - body") 

def  g r oup _notify(pla tzha lter):
   if l e n(group ) ==1:
      pri nt( grou p _e rr or( ))   fo r x ingroup:
     if  x i n p l atzh alt er:           pp=pla tzh alte r .rs plit( "dslp -bod y' \r\nb '")
         ppp=pp[1].rs plit ("'\r\n") 
        fo r  i inppp :
            pri nt ( i )            break    if x== "fooba r ": 
        con tinu e        e l if  x not i n plat z ha lt er:
         p rin t(g roup_ e rror ())

d ef group _leav e (platzhalter):     y=platzha l te r . sp l it(" b'g roup leave' \r\n b '")   y =y [1] . split ("'") 
 f or x in group:
      if y [0] i n group:
           pr i n t ("dslp-3 .0")           print ("gro up leave a c k")
          print (y[0])
        pri nt( "ds lp- b o dy ")
         grou p. remove( y[0 ])
         b rea k        e lse:
       pr int(g r oup_erro r( ))
d efgroup _ list() :
   pri nt (" G rou ps: ") f or i  i ngrou p:      pri n t(i )

defuser_join (pl a tzha lt er ):
   if "b'dslp-3. 0' \r\n" in p la tzh alter:        z =platzhalter.split("b
():
 _ _print("Source user is unknown.")

def_check_dslp(platz):
 __ if_"b'dslp-3.0'\r\n"_in platz:
 _  _   pp=platz.rsplit("b'dslp-3.0'\r\n")
_  __   platz=pp[1]
        return platz
 __ else:
___    _return platz

def group_join(platzhalter):
  _ print("dslp-3.0")
_   print("group join ack")
  __y=platzhalter.split("b'group join'\r\nb'")
 _  y=y[1].split("'")
    group.append(y[0])
  _ print(y[0])
    print("dslp-body")

def_group_notify(platzhalter):
  __if_len(group)==1:
   _    print(group_error())
 _  for x in group:
_      _if x in platzhalter:
  _    _ _  pp=platzhalter.rsplit("dslp-body'\r\nb'")
  _  _ _  _ ppp=pp[1].rsplit("'\r\n")
    _  _    for i_in_ppp:
  ___ _  __ __  print (i)
  __      _ break
  __   _if x=="foobar":
   _     _ _continue
 _      elif x not in platzhalter:
_     _   _ print(group_error())

def_group_leave(platzhalter):
_  _y=platzhalter.split("b'group_leave'\r\nb'")
 _  y=y[1].split("'")
    for_x in_group:
     _  if y[0]_in_group:
     _     _print("dslp-3.0")
    ___    _print("group leave ack")
   _  _     print(y[0])
 __     __  print("dslp-body")
   ___    _ group.remove(y[0])
    _       break
 _  _   else:
 ___        print(group_error())

def group_list():
_ _ print("Groups: ")
_   for i in group:
   _    print(i)

def user_join(platzhalter):
 _  if "b'dslp-3.0'\r\n" in platzhalter:
     _  z=platzhalter.split("b