Pythonic way to check if: all elements evaluate to False -OR- all elements evaluate to True

Question

I want the results of the function to be:

• All values evaluate to False (None, 0, empty string) -> True
• All values evaluate to True -> True
• Every

Answer 1

def unanimous(it):
  it1, it2 = itertools.tee(it)
  return all(it1) or not any(it2)