我正在尝试length = 001在Python 3中制作,但每当我尝试将其打印出来时,它会截断该值而不使用前导零(length = 1).如何length在打印之前不必转换为字符串来阻止这种情况发生？
目前,我只是测试它,并在我理解后将其添加到我的程序中.我只想知道如何在列表中找到列表的长度.
我试过了:
l = [["1","2","3"],["1","2","3","4"],["1","2","3","4","5"]]
[print(len(x)) for x in l[0]]
但它只打印了3次.我只需要打印(或返回)每个列表的长度l.