if listA== [ ] more simplified version [duplicate]

Question

When I type in the following code, PyCharm says "Expression can be further simplified". What is the more simplified version to this statement?

if listA == []:
  return "yes!"
  

Answer 1

Empty lists evaluate as falsy, so you can also do this, which is what PyCharm may be talking about:

if not listA:
    return "yes!"

There are some side effects since the above code will return "yes!" whenever list is False, an empty string (""), None, an empty dict ({}), an empty set (set()) and basically anything else that python treats as falsy