What is the correct way to sort the list 'B' using a method, the result should not return a new list, just change the list 'B' in python code example

Example 1: python sort multiple keys

records.sort(
  key = lambda l: (l[0], l[2])
)

Example 2: What is the correct way to sort the list 'B' using a method, the result should not return a new list, just change the list 'B' in python

records.sort(
  key = lambda l: (l[0], l[2])
)