Any feedback would be much appreciated. Cheers

import math

position_open = False  
position_closed = True  
postions_bought_price = 0;

def initialize(context):  
    context.stock = sid()  
    context.max_notional = 1000000.1  
    context.min_notional = -1000000.0  
    set_commission(commission.PerTrade(cost=5))

def handle_data(context, data):  
  last_sale_price = context.portfolio.positions[sid(24)].last_sale_price  
  vwap3 = data[context.stock].vwap(1)  
  vwap9 = data[context.stock].vwap(3)  
  profit = 0  
  loss = 0  
  price = data[context.stock].price  
  notional = context.portfolio.positions[context.stock].amount * price  

  global position_open  
  global position_closed  
    # When to open buy position  
  if vwap3 > vwap9*1.025 and position_open == False and position_closed == True and notional < context.max_notional:  
        #take a position of 20% of available cash  
    order_value(context.stock, (.2(context.portfolio.cash))  
    global positions_bought_price           #THIS IS LINE 30  
    global order_quantity  
    positions_bought_price = last_sale_price  
    order_quantity = math.floor(((.2(context.portfolio.cash))/positions_bought_price))  
    position_open = True  
    position_closed = False  
    print "Position Opened"  
    # When to take profit  
  if last_sale_price > positions_bought_price*1.2 and position_open == True and position_closed == False:  
    order(context.stock,-orderquantity)  
    position_open = False  
    position_closed = True  
    profit = last_sale_price*order_quantity - positions_bought_price*order_quantity  
    print "Closed by Take Profit with $%d profit" % (profit)  
    # When to stop loss  
  if last_sale_price < positions_bought_price*0.9 and position_open == True and position_closed == False:  
    order(context.stock,-order_quantity)  
    position_open = False  
    position_closed = True  
    #loss = last_sale_price*order_quantity - positions_bought_price*order_quantity  
    loss = positions_bought_price*order_quantity - last_sale_price*order_quantity  
    print "Closed by Stop Loss with $%d loss" % (loss)