Loop and the list

Krzysztof Szynter dygimailNo at SPAMpoczta.fm
Fri May 14 09:46:46 EDT 2004


Hi all

Have got a big problem. This is my code:

-----BEGIN
#stale programowe
G  = 6.67E-11
Mz = 6E+24
Rz = 6.37E+6
TX  = range(10,780,2)
TY  = []

def skoknatezenia(ilpkt):
    "Oblicza skok"    
    dr = ((2*Rz)-Rz)/ilpkt
    return dr

def natezeniep(TX,TY,dr):
    "Liczy natezenie w przedziale <Rz,2*Rz>"
    cnt = 0
    for i in range(0,2*Rz,dr):
        TY.append((G*Mz)/((Rz+cnt)*(Rz+cnt)))
        cnt = cnt + dr
    return TY

def maxvalue(TY):   #gets an index of the max value in the TY list
    max = 0
    for i in range(0,len(TY)):
        if (max<TY[i]):
            max = i
            print TY[i],max
            continue            
    return max

def normowanie(TY):    #normalize the TY list items
    for i in range(0,len(TY)-1):
        TY[i] = TY[i]/float(TY[0])  #for example '0', should be 'max'
    return TY

Koniec = False
while Koniec <> True:
    try:
        Koniec2 = False
        while Koniec2 <> True:
            ilpkt = raw_input("Podaj ilosc punktow do wykreslenia 200):\t")
            try:
                int(ilpkt)
                ilpkt = int(ilpkt)
                Koniec2 = True
            except:
                print "Ilosc punktow musi byc liczba calkowita!\t"
                continue
        Koniec = True
    except:
        print "Nieoczekiwany blad. Sprobuj jeszcze raz."

dr = skoknatezenia(ilpkt)
TY = natezeniep(TX,TY,dr)
print TY    	    	    	#first main point
max = maxvalue(TY)    	    	
print "max =",max
TY = normowanie(TY)    	      #normalize the function
print TY
-----END

I don't understand why function maxvalue returns "9". When i start a 
program and check TY list in 'first main point', the max value has an index 
0'. Then putting the list into the function maxvalue, gives me the index 
'9'. ;--/

Where is the mistake?

ps
Apologise for the Polish text's, in the code. I'll answer for any question.

-- 
Krzysztof Szynter         :'''.       :.   :                  *
Dygi GG 1027078           :...' ..... : :  : ..... . . . .    . .....
http://newbie.friko.pl    :   : :.... :  : : :.... :: :: :..  : :....
dygimail(at)poczta(dot)fm :...' :.... :   ': :.... :   : :..' : :....



More information about the Python-list mailing list