Python：for循环：使用列表中的索引和另一个列表中的另一个索引

Question

我想像以下那样循环：

    class cellVC: UICollectionViewCell {
        @IBOutlet weak var sampleLabel: UILabel!
        @IBOutlet weak var buttonClicked: UIButton!

        var buttonTapAction: ((cellVC) -> ())?

        @IBAction func buttonTest(_ sender: Any) {
            buttonTapAction?(self)
        }
    }
    
    //////////
    
    
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell
{

    let cell : cellVC = collectionView.dequeueReusableCell(withReuseIdentifier: "cellVC", for: indexPath) as! cellVC
    cell.sampleLabel. = "sample text"
    cell.buttonClicked.tag = indexPath.row
  
    cell.buttonTapAction = { cell in 
    
    //Tap handling logic
    
    }

    cell.buttonClicked.backgroundColor = UIColor.cyan
    return cell
}

我尝试使用for j in range(1,4) and for k in ['one', 'two', 'three']: print(str(j) + ' is written ' + k) ，但它没有用。有人如何得到这种效果？

如果两个列表的长度不同，会发生什么？我怎么还能遍历它们呢？

Answer 1

您可以使用zip

for j, k in zip(range(1,4), ['one', 'two', 'three']):
    print('{} is written {}'.format(j, k))    

1 is written one
2 is written two
3 is written three

如果一个比另一个长，您可以考虑使用itertools.zip_longest

Answer 2

检查出来：

for j,k in enumerate(['one', 'two', 'three'], 1):
    print("{} is written {}".format(j, k))

Answer 3

你应该zip全部！

for j, k in zip(range(1,4), ("one", "two", "three")):
    # use j and k