append elements into the empty dataframe

[jazzy]

def backtest(inCapital):
    rCapital = inCapital  
    qty1 = 0
    hp = 0
    
    cap=0
    preAdjClose = 0
    tempAdjClose = 0
    
    columns = ['Date'] #, 'AdjClose', 'POS', 'SMA' ,'LMA']
    df = pdd.DataFrame(columns=columns)
 

    for i in range(len(data)):
        
        
      
        if hp == 0:
            if data['short_moving_emavg'][i] > data['long_moving_emavg'][i]:
                hp = 1

                tempAdjClose = preAdjClose

                preAdjClose = data['Adj Close'][i]
               
                pd = data['Adj Close'][i] - preAdjClose
 
               
                qty=100
                pnl = qty * pd
               
                rCapital = rCapital + pnl
              

                print(data['Date'][i] +' | '+ str(data['Adj Close'][i]) +' | '+ str(tempAdjClose) +' | '+ str(hp) +' | '+
                      str(data['short_moving_emavg'][i]) +' | '+  str(data['long_moving_emavg'][i])+' | '+ str(pd)+' | '+ 
                      str(qty) +' | '+ str(pnl) +' | '+str(rCapital) ) 
                continue

Output:
1998-01-02 | 0.5143449999999999 | 0 | 1 | 0.4658776299999999 | 0.4653830649999999 | 0.0 | 100 | 0.0 | 100.0

I want to convert this output into dataframe. I tried appending elements but did not work