我有以下代码来绘制的RadialGradientPaint圆: public class Display extends JPanel {
@Override
public void paintComponent(Graphics g){
// SETUP
BufferedImage base = new BufferedImage(getWidth()
我的代码是一个值为2d列表的字典。我需要编写一个函数,将字典中每个列表中的所有索引号加起来。以下是我迄今为止: def totalQty(theInventory):
totalQuantity = 0
for key in theInventory:
for book in key:
totalQuantity += book[3]
theInventory是字