Converting RSI indicator to Python

[[Deleted]]

I'm having trouble converting the RSI indicator to Python. The main difference between my function and the RSI indicator is that my function is called everytime a new line of a history data file is appended to totalArray (nested list with values [datetime,o,h,l,c,v]). I can't seem to pinpoint the problem and would gladly appreciate help.

//RSI INDICATOR

   int    i,counted_bars=IndicatorCounted();
   double rel,negative,positive;
//----
   if(Bars<=RSIPeriod) return(0);
//---- initial zero
   if(counted_bars<1)
      for(i=1;i<=RSIPeriod;i++) RSIBuffer[Bars-i]=0.0;
//----
   i=Bars-RSIPeriod-1;
   if(counted_bars>=RSIPeriod) i=Bars-counted_bars-1;
   while(i>=0)
     {
      double sumn=0.0,sump=0.0;
      if(i==Bars-RSIPeriod-1)
        {
         int k=Bars-2;
         //---- initial accumulation
         while(k>=i)
           {
            rel=Close[k]-Close[k+1];
            if(rel>0) sump+=rel;
            else      sumn-=rel;
            k--;
           }
         positive=sump/RSIPeriod;
         negative=sumn/RSIPeriod;
        }
      else
        {
         //---- smoothed moving average
         rel=Close[i]-Close[i+1];
         if(rel>0) sump=rel;
         else      sumn=-rel;
         positive=(PosBuffer[i+1]*(RSIPeriod-1)+sump)/RSIPeriod;
         negative=(NegBuffer[i+1]*(RSIPeriod-1)+sumn)/RSIPeriod;
        }
      PosBuffer[i]=positive;
      NegBuffer[i]=negative;
      if(negative==0.0) RSIBuffer[i]=0.0;
      else RSIBuffer[i]=100.0-100.0/(1+positive/negative);
      i--;
     }

#MY FUNCTION

def GetRSI(totalArray,RSHolder = []):
    period = 11
    preCalculationPeriod = 11
    x = len(totalArray) - 1
    y = 0    
    gainVal = 0
    lossVal = 0

    if len(totalArray) <= period:
        RSHolder.append([0,0])
        return 0

    while y <= period:
        closeVal = totalArray[x-y][4]
        preCloseVal = totalArray[x-y-1][4]
        value = closeVal - preCloseVal 
        if value > 0:
            gainVal += value
        else:
            lossVal += abs(value)
        y += 1
    if len(totalArray) == preCalculationPeriod:
        avgGain = gainVal/period
        avgLoss = lossVal/period
    else:
        avgGain = (RSHolder[x-y-1][0]*(period - 1) + gainVal)/period
        avgLoss = (RSHolder[x-y-1][1]*(period - 1) + lossVal)/period
    RSHolder.append([avgGain,avgLoss])
    if avgLoss == 0:
        RSI = 100
    else:
        RSI = 100 - 100/(1 + avgGain/avgLoss)

    return RSI