如果元素不是无，则在列表中添加元素的优雅方式

Question

I have the following codes which add a and b into my_input when they are not None. The code works fine, but I am wondering is there a more elegant way to do this? Thanks!

if a is not None and b is not None
    my_input = [
        [a, b]
    ] + my_lib.get_my_list()
else:
    my_input = my_lib.get_my_list()

Answer 1

Maybe something like this:

[[a, b] if a is not None and b is not None else my_lib.my_list()]

Answer 2

I just find a new way to do this:

my_input = []
(a is not None and b is not None) and my_input.append([a, b])
my_input = my_input + my_lib.get_my_list()