如何在 python 中按长度对字符串的二维列表进行排序？

Question

I have a 2D list in python which contains first and last names of different people. It looks like this: teachers=[["Rachelle", "Goodyear"],["Mike","Anderson"], ["Jeremy","Smith"]] And I want to sort them by the length of their last name. I've tried different solutions but it always sort by their first name... Please help me. Thank you.

Answer 1

Here is a possible solution:

sorted_teachers = sorted(teachers, key=lambda x: len(x[1]))