Python lists have built-in sort method that sorts and modifies the list in-place.It is applicable only on lists. Sort method can take 2 optional parameters: key: It should be a function that takes a ...

Python Tip: sort() vs sorted() Sorting in Python is simple, but choosing the right method can save you headaches. sort() → Modifies the original list in-place → Only works on lists sorted() → Returns ...

In the above example, the key function is an example of a callback function. The `sort()` method "calls back" to a function you supply.