inp = ('Бананы', [1, 2], ('Stepik',), 'Яблоки', '', 'Макароны', 5, True)
for i, v in enumerate(x for x in inp if x and isinstance(x, str)):
print(i,v)
aW5wID0gKCfQkdCw0L3QsNC90YsnLCBbMSwgMl0sICgnU3RlcGlrJywpLCAn0K/QsdC70L7QutC4JywgJycsICfQnNCw0LrQsNGA0L7QvdGLJywgNSwgVHJ1ZSkKZm9yIGksIHYgaW4gZW51bWVyYXRlKHggZm9yIHggaW4gaW5wIGlmIHggYW5kIGlzaW5zdGFuY2UoeCwgc3RyKSk6CglwcmludChpLHYp