Can someone please explain this line of code for sorting list using key as parameter?

Question

gIn = list()
egIn = [101, 'Python', 102, 'Machine Learning', 'Deep Learning', 1]
def function1 (lst1):
    lst1.sort(key=lambda e: (isinstance(e, str), e))
    return lst1
print(function1(egIn))

Why are we using (isinstance(e, str), e) in this function? i understood isinstance(e,str) but why is that other e ? what does it do and how the key parameter is used

Does this answer your question? [What is key=lambda](https://stackoverflow.com/questions/13669252/what-is-key-lambda) — Sergey Shubin, Mar 11 '21 at 06:56

score 1 · Answer 1 · answered Mar 11 '21 at 06:47

Here is explanation what does that piece of code do.

List method sort can have key as a parameter. It is a function which returns value and list is sorted according to that value.

(isinstance(e, str), e) is a tuple. For string "abc" it is (True, "abc") and for Integer 5 it is (False, 5).

So it sorts first strings to the end of the list and order strings in end of the list to alphabetical order.

Can someone please explain this line of code for sorting list using key as parameter?

1 Answers1