lst != [] How this expression can be simplified?

Question

PyCharm displays the warning.

Answer 1

The problem is not in this expression, it should work.

But you can just write:

if lst:
...

Because every list that's not empty is evaluated as True.

Answer 2

HonFu, thanks!

Answer 3

It is already a simplified expression. It will be evaluated as true if the list is not empy.