Python - Why is output None?

Question

a=[24,13,32,18]
print(a.sort())

Answer 1

sort() is an object method.
It doesn't return value. It sort the value in place.
sorted() also is a function which sorts items and returns as new values.
i.e pop() method will return the popped item

Answer 2

.sort() is a function, so it needs to be called before printing

you’d be better off doing

a=[your numbers]
a.sort()
print(a)