the array order in result from Set's operations.

Question

first = {1, 2, 3, 4, 5, 6}
second = {4, 5, 6, 7, 8, 9}

print(second - first)

Is there any means to array like this {8, 9, 7}?
why not {7, 8, 9}? Or other patterns.

Answer 1

Set {} is an unordered data type. The order of its elements being printed is random unless handled adequately (sorting, filtering, typecasting, etc.)