any(x) and not all(x)

Question Q2.4.5

For what iterable sequences, x, does the expression

any(x) and not all(x)

evaluate to True?

Solution Q2.4.5

any(x) and not all(x) is True if at least one item in x is equivalent to True but not all of them:

>>> x1, x2, x3 = [False, False], [1, 2, 3, 4], [1, 2, 3, 0]
>>> any(x1) and not all(x1)
False
>>> any(x2) and not all(x2)
False
>>> any(x3) and not all(x3)
True