如何解决值错误：不在列表中

Question

我在这里遇到了同样的问题，而它实际上在列表中。可能这里还有另一个错误是我的代码检查它，请：

base = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]
c= base.index(a)

a是输入，我确保它是“o”，“k”

ValueError: ['o', 'k'] is not in list

另外，我不能放，因为必须完成这行，否则整个程序不起作用try:

Answer 1

您可以尝试给定输入中的每个字母，如下所示，输入：ip = ["o", "k"]c = (base.index(i) for i in ip)输出：for i in c:...     print(i)...1410

Answer 2

Base 似乎不是列表的列表。而不是：if ['o','k'] in list:您应该使用：if 'o' in list and 'k' in list: