Python：访问特定的子列表元素

Question

Is there a way to be able to access specific sublist element?

For example:

list = [["a","b"],["c","d"]]

how to print out only b ??

Thanks!

Answer 1

Firstly, it is a bad practice to name a variable as list as it is a keyword in Python. Say, it is changed to lis

lis = [["a","b"],["c","d"]]

To access b, you need to first get to the first element of lis , by lis[0] . This gives ["a", "b"] . Now you need to further go into it, so you do lis[0][1] , This gives the 1-indexed element of lis[0] , ie, 'b'

Answer 2

You need to select the first sublist in your list (index 0), and then the second element of your sublist (index 1).

Result is list[0][1] .